Extra Story: A step into the past (Lemon)

Timeskip (9 years from the present)

"So this is the place..."

A 9 year old boy with short golden hair and eyes muttered while scratching his chin as he stared at the large gate of the seal.

"Let's go in"

The boy said while glancing back at his 4 companions before dropping his blood to the tube close to the door of the building to open the seal.

Timeskip

"..."

"What?"

The boy asked while noticing the hard stare that Cerberus was giving him.

"Lucias Frey..."

They all muttered his name like they were trying to memorize it by heart causing both Lucifer and Modeus to giggle from her actions.

"You're our new owner?"

They asked causing Lucias to scratch his head as he awkwardly answered their questions.

"I'm not your owner, I'm your ally"

Lucias said before being carried by the triplets who were closely observing his body.

"Please don't mind them, Lucias-san... It's just that... They've been traumatized a bit in the past because of being abandoned... they just want to appeal to you so that you wouldn't abandon them as well"

Lucifer explained while watching Cerberus try pleasing him by carrying him up in the air.

"... I'm don't have any intention of abandoning anyone... so you can relax, Cerberus-san... I won't leave you alone, unless you want to"

"..."

Cerberus who heard his words said nothing but stare at him with a reluctant expression on their faces like they're having a hard time trying to trust his words.

"... C-Can we trust you?"

She asked while placing him down on the floor.

"That is up to you... I can't force you to trust me due to your trauma but... I can guarantee you that I won't abandon my allies no matter what"

Lucias stated in a determined voice causing Cerberus to narrow their eyes as they started smelling his scent to see if he was lying.

"... Not lying?"

"Y-You won't leave us?"

They asked causing Lucias to smile as he patted their hair with a gentle smile on his face.

"Of course, how about this... I'll sleep with all 3 of you for 5 days every week so you wouldn't feel lonely... as long as you won't do anything to me while I sleep"

Lucias stated causing the triplets to look at him with a bright expression on their faces.

"R-Really!?"

"Yes, if that's what it takes for the 3 of you to trust me so be it"

Lucias assured with a light smile on his face causing Cerberus to charge at him and pin him down to the floor with a joyful smile on their faces.

"It's a promise!"

"Y-You're not allowed to break your promises!"

They said with a sweet yet innocent smile on their faces as they hugged his 9 year old body with joy written on their faces.

"I promise, I bet my life on it"

Timeskip (4 years)

"Owner! We missed you!!"

Cerberus happily charged at him with all of their strength as soon as he came back from work causing Lucias to smile as he hugged all 3 of them in response.

"I'm back"

"Mn!"

The triplets hummed in a joyful tone while being hugged by Lucias who grew as tall as them in the past few years.

"Cerberus... I have something to tell you"

Lucias said as he seperated from them causing all of 3 of them to shiver in fear from hearing such words come out of his mouth.

"P-Please don't leave us!!"

"W-We will good please don't leave..."

They immediately said in a sorrowful tone due to the trauma that they had a few years ago.

"Huh?"

Lucias muttered in confusion as they suddenly started crying in his embrace.

"... What are you 3 talking about?"

Lucias asked the triplets causing the three of them to look up with tears welling up at the corner of their eyes.

"B-But weren't you going to leave us?"

One of them answered with another question causing Lucias to look at them with a serious expression on his face.

"I will never do that, why would you suddenly arrive at that conclusion?"

Lucias asked while patting their heads with a gentle smile on his face.

"B-But-"

"Didn't I promised in the past? That I'll never leave you alone. Why can't you three trust my words?"

He asked while looking at them with narrowed eyes causing them to guiltily lower their heads in response.

"I wanted to tell you girls that..."

Lucias said before taking out 3 small delicate boxes from his pockets with a nervous expression on his face.

"... W-Will you marry me?"

-Back to the present (with Cerberus)-

"L-Lucias will get mad at us..."

One of the triplets muttered in a sad tone as they walked around Kuoh under a heavy rain, searching for a replacement for the sword that they accidentally broke a while ago.

"I-I'm scared..."

One of them said as she tightened her grip on her twin's hand in a shaky voice, afraid that Lucias would abandon them for breaking his sword.

"*Hic*... I don't want Lucias to go"

"M-Me too... I-I love our new owner...".

"L-Lucias won't abandon us!"

All three of them said to themselves as they searched around the city despite the heavy rain that was drenching their entire body.

"W-We need to hurry!"

"B-But everything's closed..."

One of the triplets commented, ignoring the weird stares that the people were giving them due to their drenched appearance as they hurriedly searched every corner of Kuoh to find a replacement for his broken sword.

"*Hic*"

"D-Don't give up!"

"Mn!"

The three of them said but froze as they smelled a familiar scent coming from behind them causing fear to grip their hearts as they slowly turned their heads.

"Cerberus..."

Lucias called in relief while drenched from head to toe as he desperately searched for them everywhere, causing his worry and fear to amplify each time he couldn't find them but now... A sense of relief and happiness washed over him as he saw they're figures, guiltily standing in front of him with their ears dropped on their heads.

"L-Lucias... W-We're sorry for-"

One of them tried to immediately apologize but was cut off by Lucias who hurriedly ran towards them and hugged them in his embrace.

"Do you know how worried I was!? How can you suddenly disappear like that!?"

Lucias reprimanded while gently hugging their soaked body with a frown on her face, causing the three of them to jolt as he never got angry like this before.

"W-We're sorry!"

The three of them apologized in unison as they hugged him back with tears at the corner of their eyes.

"Don't ever do this again, alright? I'm glad that the 3 of you are safe"

Lucias said causing the three of them to nod their heads in response.

"Y-You're not angry?"

One of them asked as they reluctantly looked at him with guilty eyes.

"I'm angry, how can you suddenly ran out without informing any of us!"

"N-Not that... W-We broke y-your sword... W-We're sorry..."

"..."

"W-We didn't mean it *hic*... P-Please don't leave us"

One of them said in a surrowful tone as she hugged his body tightly while Lucias took off his cape and gave it to the 3 of them to protect them from the rain.

"Is that why you three ran away?"

He asked as all 3 of them nodded in response.

"... You..."

"P-Please don't abandon us"

Lucias sighed from their words before giving one of them a deep kiss on her lips, surprising them from his sudden actions.

"Why would I abandon you for something like that? You're much more important to me than a scrap of metal Cerberus"

"Y-You forgive us?"

"I was never angry about it in the first place"

Lucias said before pulling all 3 of them inside a nearby hotel to stay at for the night.

"R-Really?"

"Of course, you 3 are one of the most important beings in my life... didn't I say that before when I proposed to the three of you?"

Lucias asked while renting a large room for the 4 of them causing the triplets to awkwardly scratch their heads in response.

"T-Thank you, Lucias"

"Thank you"

"Mnn..."

The three of them muttered while following him inside their room with a guilty expression on their faces.

"Go ahead and take a bath first. It must feel uncomfortable wearing soaked clothes..."

Cerberus nodded their heads in response as they quickly took off their drenched clothes, revealing their smooth and soft white skin and slender figure with ample breast that was not too big nor was it too small, just a perfect size that is able to fit in his hand.

"... Even though I said you should take a bath... Don't suddenly remove your clothes in front of me"

Lucias said with a wry smile before picking up their wet clothes to dry them up with magic but was stopped by Cerberus who held his hand.

"... Lucias, bath together?"

One of the triplets asked while the other 2 clung to his sides with a hopeful expression on their faces.

"Bath together..."

"..."

"Please?"

All three of them pleaded with upturned eyes as their tails slowly wagged behind them.

"... Fine, wait for me inside, I'll dry our clothes for a moment"

Lucias said in a helpless tone causing the triplets to look at him with joyful smiles on their faces.

"We will!"

She happily stated before running towards the bathroom naked while Lucias slowly picked up their clothes.

"[Cleanse]"

Lucias casted causing a layer of mana to cover their clothes, cleaning it from all the dirt and water stuck to the cloth before folding it neatly and placing it beside the bed.

"... I should get ready..."

Lucias said before taking off his shirt, revealing his lean and mascular body as a single emblem of the forsaken faction is tatooed on the side of his waist.

"Lucias!"

Cerberus called out from inside the bathroom in an excited tone.

"Wait"

Lucias said as he took off the last piece of cloth on his body except for his boxers which covered his large member.

"... I need to control myself"

Lucias said with a sigh, trying to dispel the slight arousal that he felt from seeing their naked body.

Timeskip

"Lucias!"

One of the triplets shouted as she charged towards Lucias who just came inside the bathroom without reserve, pressing her soft and ample breast on his chest while an innocent smile shone on her face.

"Let us wash you!"

She stated while hugging his mascular body causing Lucias to unconsciously wrap his arms around her slender and smooth waist.

"Sure"

Lucias nodded his head in response before quitely sitting down on corner of the bathtub with a light smile on his face while watching them play around inside the large bathtub.

"W-Where do we wash first?"

One of the triplets asked as all of the grabbed a piece of sponge and soap in their hands before surrounding Lucias who obidiently sat down in the middle.

"Wash my back first, Cerberus"

Lucias answered causing the three of them to nod their heads as they all obidiently scrubbed his back with an eager expression on their faces.

"Lucias, why are you wearing this?"

One of the triplets asked while pointing at his boxers which was barely hiding his member.

"Uh..."

"Take it off!"

She said before ripping it off his body causing him to unconsciously grab it as he tried to hide his member.

"... B-Big..."

One of them commented as they all threw the soap away and focus on his member with slightly flushed cheeks.

"Uh... This is kind of embarrassing so... can you stop staring at it?"

Lucias said with a wry smile on his face but was only ignored by Cerberus who grabbed his arms as they all pulled it away from his crotch, revealing his large member to the three demon dogs who were staring at it in wonder.

"S-So this is Lucias..."

"O-Oh"

They muttered causing Lucias to wryly smile as he tried to pull his arms to try and cover his crotch but was stuck in place as two of the triplets held both of his arms in firm grasp.

"H-How does it taste?"

The remaining one asked before slowly grabbing his member with her soft and warm hands, causing it to twitch as it immediately erected as soon as it felt her touch.

"O-Oh"

She muttered while staring at his member which was longer than her own face before slowly moving her head closer to his member.

"W-Wait, Cerberus"

"Mnnn"

She hummed before swallowing his member inside her mouth, causing Lucias to growl in pleasure from feeling her warm mouth envelop his member.

"Mnnn mnm"

She tried to say something while bobbing her head up and down, trying her best to try and satisfy Lucias despite their inexperience in mating.

"Cerberus..."

Lucias called before glacing at the other two, noticing the ecstatic expression on their faces as the taste of his member was transmitted to them through their shared senses.

"Fuck it"

Lucias cursed before pulling one of them close to him as she kissed her soft pinkish lips with his own surprising her from his sudden actions.

"Mnnn mnm mnnm"

She hummed between their kiss before feeling his tongue infiltrate her mouth, sending a wave of pleasure down her spine while Lucias slowly caressed her tongue with his.

"Ahh mmmn"

"N-Not fair..."

The remaining one muttered before hugging his body, gently licking his neck causing Lucias to jolt from the extreme pleasure that he felt.

[Skill: Telephatic Senses has been identified]

"Cerberus!"

Lucias shouted as he grabbed her head with his hand, pushing her head down his member, causing it to penetrate through her throat as he released her semen deep inside her throat.

"Ugh..."

Cerberus muttered feeling a slight pain from his sudden actions but didn't resist as she let him release all of his pent up desire in her mouth.

"Haa... Ha..."

"L-Lucias... let's mate"

One of the triplets whispered causing Lucias to smile before carrying them in his arm as they left the bathroom towards the bed of their room.

"I love you, Cerberus"

Lucias whispered before placing all 3 of them on the bed causing the triplets to look at him with a shy expression on their faces.

"P-Please make puppies with us"

"Don't worry... we're going to make a lot of puppies by tonight"

Lucias said before climbing on top of one of the triplets with his member aimed at her small and pinkish entrance.

"Is it your mating season, Cerberus?"

"Mn!"

"Y-Yes..."

"Mnnn..."

The three of them answered at once causing Lucias to smile as he leaned down on one of the triplets while his fingers slowly caressed her entrance to prepare her.

"Ah... Nmm mnn... I-I feel weird Lucias"

One of the triplets said as she grabbed his arm that was gently caressing her entrance while her other two halves moaned in pleasure.

"How does it feel Cerberus?"

He asked with a teasing smile on his face while watching her cute moans and expression.

"I-I feel hot... Lucias... I-I want it inside"

She said while glancing at his large member that was poking her stomach.

"I'll be gentle Cerberus... so endure it alright?"

"Mn"

She nodded her head in response as Lucias inserted his fingers inside the entrance of one of the triplets by his side.

"Mnn!!"

She moaned in pleasure as Lucias gently caressed aimed his large member at the her entrance.

"L-Lucias"

One of the triplets called, feeling his twitching member at her entrance as she nervously looked at Lucias who was looking at her with love and care.

"Are you ready?"

He asked causing her to nod her head in response.

Lucias who saw her nod slowly inserted his large member in her wet entrance, but due to his size he had to force it to enter, causing extreme pain to travel through the triplets body.

"It hurts!!"

She screamed as her other two halves bit his body to try and elevate the pain.

Lucias who felt their teeth sunk into his skin smiled as he gently caressed her hair to try and calm her down.

"I-It hurts... Lucias"

She muttered in pain while tightly grabbing the blanket behind her with her hands.

"Sorry, Cerberus"

Lucias softly said as she gave her a soft kiss on her lips causing her to jolt as she wrapped her arms around his neck.

"Mnnn nnmmn n ahh"

Cerberus moaned as Lucias carefully penetrated through her hymen causing her to scream in pain between their kiss while Lucias comforted her to endure the pain.

"Does it still hurt?"

"Mn"

Cerberus nodded her head in response while her shoulder trembled from fear due to the extreme pain that she felt when Lucias took her virginity.

"Show we stop?"

"No!!"

The 3 of them rejected causing Lucias to smile as he felt a drop of blood travel touch his member.

"L-Lucias, let's make lots of puppies"

She muttered with tears welling up at the corner of her eyes causing Lucias to kiss her lips before slowly started moving his hips.

"Ahh mnn mmnn nmm"

"I-It still hurts..."

One of the triplets by his side muttered as she held her crotch with pain visible in her eyes.

"L-Lucias go faster"

One of the triplets who was laying down on the bed requested causing Lucias to slowly increase his pace as he growled from the intense pleasure that he felt from her tight walls, greedily sucking his member inside her entrance.

"Ahh haa mnmm mn L-Lucias mnn"

She moaned in pleasure feeling his member moving inside her entrance while watching Lucias deeply kiss one of her other halves by his side.

"Mnnmm ahh haa"

Lucias who heard her cute moans couldn't resist himself anymore as he lifted her body up in the air and strated thrusting his member deep inside of her, penetrating through her cervix.

"MNNNN!!"

She screamed in pleasure, feeling his member penetrate deep inside her cervix as he quickly started thrusting his hips while carrying her in his arms.

"L-Lucias mnn S-Something's coming ahh mn"

"Cerberus..."

Lucias called while thrusting his hips inside her womb causing juices to fall onto the clean sheets of the bed while the other two held their crotch while looking at him with dazed eyes.

"It's a good thing that all of you share the same senses..."

Lucias muttered before thrusting her hips one last time, piercing her deep inside of her as he started injecting his seed in her womb causing her to twitch as she felt his hot seed paint the walls of his womb.

"Ahh... haa.... Ha... I-It feels hot "

Cerberus muttered while caressing belly with an ecstatic expression on her face.

"L-Lucias... O-One more time"

She muttered with a hopeful expression on her faces causing Lucias to smile as he slowly placed her on the bed.

"Sure but you have to wait for your turn, alright?"

Lucias muttered as he positioned his member at the entrance of one of her other half while she kneeled on the bed on all fours.

"W-Will it hurt again?"

She asked, feeling his head rub her wet entrance in a nervous tone.

"Yes..."

"Mnn..."

She nodded her head in response as she prepared herself for the upcoming pain of having her hymen broken again.

"J-just put it in me"

She muttered causing Lucias to slowly pierce through her entrance causing a single drop of blood to drip down the bedsheets.

"L-Lucias..."

She called before noticing her other half, tiredly laying down on the bed as his seed flowed out of her womb due to the sheer amount that he inject in her womb.

"H-How does it taste?"

She asked herself before moving her head closer to her entrance, licking his semen off of her crotch causing all of them to jolt from the sudden sense of pleasure that was transmitted on their bodies.

"I-It taste good..."

She whispered to herself as she swallowed the semen in her mouth causing Lucias to hug her stomach from from behind.

"Lucias...? AH!!"

She moaned in pleasure as Lucias penetrated deep inside her womb.

"If you show me that kind of expression... I won't be able to control myself anymore, Cerberus"

He whispered close to her ears in a lustful voice causing her to blush from feeling his warm breath in her ears.

"Mnn..."

One of the triplets who was watching them by the side hummed as she started licking the entrance of her other half, diligently licking off his excess semen that was flowing out of her other half's womb.

"Cerberus... We won't be going home for today... so let's enjoy ourselves for the night"

"Mnn... I love you, Lucias"