Sona is the new princess of the Underworld

"Good work, Dear." 

When the match ended, Sona came, bringing a towel and mineral water for her husband. 

"Thank you." 

Riser accepted the towel and mineral water from his wife as he kissed her forehead, showing his appreciation. 

Saji sighed, watching the intimate exchange between the two, but the rest didn't say much, as Sona was Riser's wife. 

"Riser-sama, is that guy really the third rank?" Xenovia suddenly asked. 

"Yes, what's wrong?" Riser looked at this silly girl, wondering what she was going to say. 

"I know that it is wrong for me to say this, but... why is he so weak?" Xenovia was confused. She knew that with her status as a "Low-Class Devil," she shouldn't say this, especially to Bedeze Abaddon, who was an "Ultimate-Class Devil," but she couldn't help it!

"..." 

"It's not that he is weak. I am just too strong." 

Riser's answer was as simple as that. 

"..." Everyone. 

What could they say?

However, no one could deny it as Riser was the Lucifer. 

Riser had to become the strongest, or else that name wouldn't fit him. 

Nevertheless, the power of Bedeze Abaddon was quite interesting. 

The Power of Hole was a good ability, as it was versatile. 

However, if there was a weakness, it lacked power as it couldn't be used to attack unless to redirect an attack. 

Still—

[Congratulations, you have defeated the 3rd rank of the "Rating Game.]

Riser was surprised. 

Would he get a reward?

There wasn't much nonsense from the system. 

[Congratulations, you have received "Busoshoku Haki."]

"Busoshoku Haki."

Riser was familiar with this reward as it wasn't his first time receiving a reward from the world of "One Piece." It is also an ability that allows the user to use their own spiritual energy to create, in essence, an invisible piece of armor around themselves, providing incredible offensive and defensive capabilities.

However, something attracted him after he got this ability. 

Spiritual energy, huh?

This energy was different from stamina or demonic power but something that was born from will. There was no doubt that it was an abstract concept, and it was impossible to tell the amount of will that one possessed, which made this type of energy different from stamina or demonic power. 

To be honest, it was his first time to know that such an energy existed. 

However, whether it was spiritual energy, stamina, or demonic power, he could use either of those types of energy to use the Busoshoku Haki.

Nevertheless, similar to his stamina or demonic energy, his spiritual energy was also limited. 

Riser sighed, wondering when he could break the black chains around his body as he wished to become Desperado. However, he realized that in this world, there weren't many creatures that could hurt or even kill him, especially when he had the "Ruler." 

As long as this ability existed, no one could kill him. 

Still, there were still two matches, and from the system, he knew he would get rewards by defeating the 2nd and 1st ranks of the "Rating Game." 

'Roygun Belphegor and Diehauser Bellial.'

With the thought of the two individuals that he needed to defeat next, he suddenly felt two soft feelings pressed onto his back. 

"Congratulations, Riser-chan~!" 

Serafall suddenly leaped into his back and hugged him tightly, rubbing her face against his cheek from behind happily. 

"...." 

Sona only stared at her older sister in silence. She wasn't sure how many times Serafall had done this, and her nerve was stronger, especially when she had seen him with Rias and even had a threesome with Xenovia. 

Frankly, when everything happened, Sona realized she wasn't that angry. Instead, she felt quite sorry for Riser as she knew that her body was unable to endure his sexual drive. Moreover, she had also been quite busy lately, especially when she was the "Youth Devil Gathering" was about to start. 

Still staring timidly at her husband, Sona wondered whether it was okay for her to ask a request, especially when she knew he was so busy. 

"What's wrong, Sona?" 

After staring at Serafall helplessly, Riser noticed his wife seemed to have something to say. 

"Ah, um..." 

"So-chan is cute..." 

Watching Sona, who was nervous, Serafall muttered. 

"You are right. She is my wife, after all." 

Riser also nodded, but he suddenly thought of something. "Sona, the "Youth Devil Gathering" is going to start soon, right?" 

"Yes." 

Even though Sona was the wife of the current Lucifer, she was still part of the youth devil, and she needed to participate in this event, especially when she also wished to participate in the "Rating Game." Moreover, she also had planned to create a "Rating Game" school for the low-class devil. 

If Sona didn't even have experience in the "Rating Game," then how could she even create one?

Well, with her older sister and her husband, everything was possible, though. 

"How about I train you and your peerage for your first "Rating Game?" Riser suddenly said. 

"Eh?" 

Not only Sona but all of Sona's peerage members were surprised. 

"Is-Is that okay? Won't you be busy?" 

While Riser might have easily defeated Bedeze Abaddon, he still had to defeat Roygun Belphegor and Diehauser Bellial. Moreover, there was also his job as a Lucifer, managing his territory, business, and many others. 

To be honest, it was amazing that Riser could solve all of those works with just four to five hours of work from Monday to Friday. 

If Sona was in Riser's place, she believed that she would spend much overtime, yet Riser never held back, whether it was work or play. 

Even if Riser became a Lucifer, he would never sacrifice his break for the lives of the devils in the Underworld. After all, he wasn't Sirzech Lucifer, the abnormality among the devils. 

"It's okay. I am different from your sister, who is often going out to work." 

"...sometimes, I envy you, Riser-chan..." 

Serafall sighed since, unlike Riser, who could work so fast and efficiently in his office, she needed to move to various places as she was in charge of foreign affairs. 

Nevertheless, there was no doubt, in terms of government management, that Riser was above Sirzech, which made the rest of the Maous feel speechless as his rough image never seemed to fit how brutal he was. 

"Did you think something rude about me?" Riser looked at Serafall. 

"No! No! No!" 

Serafall shook her head, causing her twin tails to move right and left wildly. 

Watching the movement of the twin tails and her breasts that moved in various directions, showing how well-developed her breasts were, Riser sighed and thought that it was hard to become a good brother-in-law. 

"Anyway, in terms of strategy, there is no need for me to say anything or give you advice, as I am sure that you can show me even a surprising strategy." 

Sona was one of the smartest devils, after all. 

"However, you still lack individual power, so I will train you and your peerage members to become stronger during this summer break before your first "Rating Game." Even if you are my wife, I won't hold back, so be prepared." 

"O-Okay..." 

Riser looked at Sona and fell silent, especially when he saw her blush and giddy. 

Nevertheless, Sona's peerage members were also excited as Riser would train him, but that wasn't all since the good news was just about to begin. 

"Also, for those of you who don't have a special weapon or Sacred Gear, I will make a special weapon for all of you, too." 

Those words were enough to make all of them excited. 

Still, there was no doubt Sona's peerage members might surprise everyone during this "Youth Devil Gathering." 

Meanwhile, others might have a hard time as there was no doubt whether Riser and Serafall were going to pamper Sona.