It will be fun~

Boku-kun. This was not his name, but ever since his sister call him like that, everyone also used that nickname for him.

Previously he was a normal adult man, who like most people in the world had secret and dark days. Back in grade school, he was the prime bullying target for girls, even when he already adult, he haven't had any good experience with women. So naturally, he is a virgin, he spends his days jacking off with image of his crush panties that vividly burned into his mind despite it was been years ago when he was still a little kid.

One day his big sister suddenly call him and anouched that his crush was getting married. When he got there, with a look of despair he saw his crush, Kasumi Suzuhara, in her wedding dress smiling happily on her most happy day.

Mixed feeling of jealousy, envy, anger and most importantly regret building up inside his mind. He couldn't help but turn around and get away from that place as fast as possible, he regret his childhood life, he just hope he can starting all over again so this is not happened.

'Everyone found happiness. The ones who bullied me, Kasumi, everyone!! ...Getting married, having kids, and being happy.'

'Only I... only I haven't changed at all since the time I was bullied. Spending everyday mastrubating while clinging to old memories, even when I turn 40 or 50, I'm sure everything will remain exactly the same.'

"Fuck, fuck! Fuck!!"

While he was lost in his thoughts and trying to get away from reality. He was not aware of a truck approaching him at high speed, that resulting in his 'death'.

...

But when he opened his eyes again, instead of his supposed death. He is back in time, with his younger body but somehow with his adult man mind still intact...

"Now with this, I will live without any regret."

***

"Do you guys thinking what I am thinking?" Levi said to his girls.

Yuki, Yuna and Nina then nodded simultaneously, it's really obvious what will happens when a child's body is occupied by an adult mind especially when that person has feelings of revenge or insatiable love.

"But to think... there would be someone else reincarnated like Levi..." Yuna said with daze on her face. Knowing reincarnation was real was surprising enough, and now somehow two people around her being reincarnated is a hard hit in her mind.

"Rather than calling it a reincarnation, I think it's more correct to call it regression, where he is back in time but still carries his 'future' memory." Nina explained while adjusting her glasses.

Spotted interesting word in her sentence. Levi asked Vermeil for more information. "He is from future? Does that mean he knows what I will be like in the future?"

He knows future is not fixed, because his slighless action can change the future like butterfly effect. But it wouldn't hurt if he knew the rough picture that the future holds.

[It's certainly not. Imagine the world he lived in before was an alternative world. So 'Levi' in ​​his world was 'Levi' who had no memories from his first life and no system, like you. ]

'Hmm... it made him even just more useless than I thought I won't naively say "that the future me won't mess up the world with you". I don't know how the other me in another realities will thinks and react. But it was definitely different from me after getting my past memories back.'

[Hehe~ thanks for the praise master~ let's do a lots of fun together~!]

'Of course.'

|embrce it!!|

'God... It's comeback.'

"..vi"

"Levi!!"

Waking up from his internal thoughts, Levi then looked at Yuki in confusion.

"What?"

"What do we do with that 'kid'? do we will kill him like the others?" Yuki said rather casually, feeling not bothered by killing anymore.

It's shows how much killing can change a person's mentality... or she's simply forgotten about it due to all the sex they're having...

Shaking his head in response to Yuki's words, Levi responded "No, but I have a better way of handling cases like this"

Remembering a tag in a hentai that was hated so much that some would not even be able to read it because they had such a heart that easily broken and left trauma to the reader or watcher.

"Let's NTR that 'kid'~" Levi said with sadistic grin on his face. He don't know when, but he somehow turn into sadis and he suprisingly enjoy it.

Hearing that Yuki also couldn't help but exclaimed. "Wahh!! Scary~ my little brother become scary creature that's like to torture people~"

Chuckling at Yuki response, Levi then got up from Yuki's lap while stretching his arms.

"Alright! *Hnghh* let's go back to class because our break time is over! and we can discuss this again another time."

The girls nodded at his words and started to get up as well then following him.

***

After they arrived in class, they immediately became the center of attention of their classmates. That's not surprising because just by their appearance alone the four of them can easily become idols in class, but because of their unapproachable nature, especially when they're together, many will people ostracize them.

Of course not everyone will be against them just because of that, there are also some people especially girls will try to get close to them. But they don't care about all that because for them the friends who are here are only temporary and they may not meet again in the future especially when they have Levi who can move from one world to another.

But today is different when they entered the class, if on a normal day they will immediately sit in their respective seats and ignore the commission, today Levi's and his girls attention immediately turned to the plain boy who was holding the legs of a girl with tan-skin, black hair and amber eyes, the boy is lifting the girl's legs in the air and pressing his feet on the girl's genitals.

Seeing all if this, Levi inwardly thought 'So it's Narumiya huh, It's not to surprising if we know Narumiya's bullying nature. I could guess that in his first life he was the victim of Narumiya's bullying, so now he wants to repay her by humiliating her.'

'But really dude? I'm sure you're already adult before your regression, but you still hold a grudge against her?'

Without thinking much more, he slowly approached the 'boy' and kicked him in the stomach with controlled output so he doesn't accidently kill the him. He then turned to the tan skinned girl while give her a hand.

"Are you okay Narumiya?"

"*Hnngg* Eh..ee? Yeah! Thanks you!" Unsure of what had just happened when the feeling of 'discomfort' before suddenly vanishing, she was only able to answer a few moments later.

Her name is Sera Narumiya. Although they rarely interact with each other but she is not one of those who ostracize them, even though she likes to bully other people who she deemed weak but Levi let her as long as they was not someone close to him.

"What ar- you doing! *cough*" The 'boy' that Levi kicked shouted while holding his stomach in pain.

'*Cough* Dammit! I forgot that bastard is still here.' The 'boy' or everyone call him Boku-kun screamed in his mind.

Considering how popular Levi in his past life with just his looks, he naturally know who Levi is, and in the future he will become successful business man along with Tsubakihara's twin by his side. And although they never interact with each other, he still hold grudge against him just because he envy how easy Levi' life seemed to be.

"Look at the mirror and said it again, What are you doing to do with Narumiya?"

The boy was silent at Levi's question and hesitated to answer for a second.

"I..."

"All right class! Today we will discussing assignments..."

But it's already to late because their class teacher had already arrived so Boku-kun could only pause again and sat down feeling revengeful.

'Just you wait! one day...'

Ignoring the glare from the 'boy', Levi sat down as well and looked at Yuki beside him, who replied with a nod, Levi then smiled and replied her with a nod as well.

Previously when Levi was about to kick the boy, he gave an order to Yuki to give him the poison he bought from Vermeil on the way to class, the poison is not lethal but will make a boy's penis unable to erect and will limp forever and he will also feel excruciating pain when touching a woman's skin.

So while all attention was on Levi, Yuki quietly walked over to the boy's bench and mixed the poison in his drink.

Why they do all of that? Because this is all for prevention, obviously with such a kid body there are bound to be many who will lower their guard around him, and he will definitely take that chance to r*pe the girl he like or something like that.

When all of this happen. Boku-kun that still glared Levi in hatred couldn't help but shifted his glare toward the white haired beside Levi but with confusion in his eyes.

'Who's she? I don't remember her when I was in elementary school... And even If she really exists. I would've definitely notice her with that flashy white hair, and no-one in this school had white hair except for him...'