Start by Eating Jake Jake no Mi

"I know that it might be late to say this, but are you okay with me? I am a devil, after all." 

"...it's really too late, nyaa." 

Kuroka had been tossed around so much that she had become a docile, domestic cat that laid on her loved man's chest, as her tail played with his tail affectionately while her other tail played with his front tail, amazed by its vigor and power. 

Still—

"It's okay, nyaa. I only want kitties from you, not anything else, nyaa." 

In other words, Kuroka only wanted to get a gene from Masa's sperm. 

Nothing else, nothing more. 

Well, if possible, she wanted to keep doing it more with him since it felt great~! 

It was her first time, but she had to admit that Masa was great~! 

Only—

"It hurts!" 

Kuroka quickly covered her forehead and complained. "Why did you flick my forehead, nyaa?! It hurts!" 

"Don't have children if you are not prepared to give them a complete family." 

Kuroka might be okay with having a child and raising her kitty alone since this was probably what she wished for, but the child was different from this kitty, and she would wish for a complete family. 

A father and a mother. 

This was something normal, yet somehow, it was hard for someone to have a complete one. 

"..."

Kuroka was immediately silent, watching him in a daze, never expecting that Masa was this type of a guy. She had prepared herself to be abandoned by him after all of that as she knew well how evil a devil was and as she had said before, she just wanted to have strong children, so even if she was treated like that, she didn't mind, and she was also used to living as a stray cat, being haunted by others, so... his words made her in a daze for a while. 

"You will be a good father, nyaa." 

Showing a gentle smile, Kuroka snuggled him closer, then said, "But I am a criminal in your world, nyaa. Do you think you can bring me to your family?" 

"Am I so unreliable in your eyes? Just taking care of you is nothing for me."

If Rias could take all criminals as her peerage members, then why couldn't Masa do the same? 

"But if you don't trust me, then I won't force you." 

Their meeting was short, and even if they had done "everything," and Masa got her virginity, the trust between them wouldn't have been built so easily, especially when Kuroka's misfortune came from a devil. 

If Masa wasn't wrong, while Kuroka was pictured as an evil stray devil who killed her master, he knew well that her master was the one who wanted to harm Kuroka and tried to conduct an experiment on her little sister, so to protect her little sister, she killed her master and became SS Class Stray Devil, one of the most powerful Stray Devils in the world. 

Kuroka might not agree to accept his invitation to go back with him, considering her past and all.

As Masa had said before, even if Rias had beautified the meaning of being her "servants," in the end, the reincarnated devils were nothing but servants or even slaves. 

Rias might love her slaves dearly, but the others were different and treated those slaves like tools, which was why many stray devils existed, such as Kuroka. 

Yet unexpectedly, while Masa was worried about her, Kuroka laughed. 

"Hahaha... you are so cute, nyaa~!" 

"..." 

Watching Kuroka laugh happily as she pulled his cheek, Masa just stared at this silly cat in silence. 

"Stop looking at me like that, nyaa! Okay, if you are not afraid, then I can go back with you, nyaa! Or rather, even if I want to escape, I can't do it, right? Just do whatever with me, nyaa~!" 

Anyway, Kuroka knew that she couldn't defeat Masa no matter what, so she might as well enjoy her time with him and have a lot of kitties~! 

"....." 

'Now that you mention it.' 

Somehow, Masa felt that he was so pure and silly, but then again, for him, who had a power that made Kuroka only succumb, he knew well that she couldn't do anything except go with him. 

Instead, if there was a reason why Kuroka thought to leave him, it was because she didn't want to cause him trouble. 

Unlike the others, Kuroka was clear that Masa was a young devil, which was different from the vile old devils, so she thought that he might be naive, yet even if he was naive, he was a man, so how could he abandon his woman? 

Still, even if Masa brought Kuroka, he knew that no one would stop him, especially when many crises might arise after he took down Issei and killed Azazel. 

If the two didn't exist, Masa knew well that the devil might be in danger, especially when many myths would realize the god had passed away. 

Yet, at the same time, he also felt that nothing would happen since even if the god existed in the past, it was the enemy of the devil, and this enemy had gone; it didn't matter. 

Instead, the one who would be in danger was the heaven side and those who were in the Vatican; as their god was no longer protecting them, they might be ganged up by the devils, the fallen angels, and other myths instead. 

"Okay, then, let me make you my peerage members." 

"Huh? Is that okay, nyaa?" 

"Why not? Anyway, no one will say anything to me." 

"...are you Lucifer's illegitimate child or something, nyaa?" 

"I am just an heir of one of the noble houses." 

"..." Kuroka. 

"So, which piece do you want to become? Bishop, knight, or rook?" 

"Why not Queen, nyaa? I am quite powerful, you know?!" 

As a stray devil, Kuroka was familiar with the Evil Pieces, so of course, she knew which piece was the most powerful, and considering her power, she felt that she suited the role of his queen! 

"You are a bit too weak." 

"..." Kuroka. 

She wanted to complain, but she knew how strong Masa was, so she could only give up. "Okay, get me the knight, nyaa!" 

"Knight, are you sure?" 

"Yup, nyaa! By the way, I want to learn ninjutsu from you, too, nyaa!" 

If it was before, Kuroka might wish to become a bishop, but somehow, she felt a bit resistant to becoming a bishop, considering her past and all. While her specialty might be magic, she wasn't weak in close combat or physical ability, so the knight piece that increased her speed suited her well as a hit-and-run tactic like an assassin was her way of fighting. 

At the same time, if she learned a ninjutsu from Masa, too, then she would become more powerful.

"Sure." 

Masa took his knight piece and then transformed Kuroka into his knight. 

"Hnh~!" 

Somehow, Kuroka felt her body was all warm, and a nice sensation made her leak a sweet moan, but Masa was surprised when two bishop pieces came out from her body.

"Oh, those are my bishop pieces, nyaa!" 

Still, inwardly, Kuroka felt helpless, realizing how weak she was since one knight piece was enough to transform her into Masa's knight. 

Yet, the amount needed to transform one into a peerage member also depended on the power of the owner of the evil piece. 

The weaker the master was, the more evil pieces needed to transform others into their peerage members, and the stronger the master was, the fewer evil pieces needed to transform others into their peerage members. 

Unlike Kuroka's previous master, who needed two bishop pieces to transform Kuroka, Masa only needed to use one knight piece. 

Masa could probably even use one pawn piece to make Kuroka become a member of his peer group. Still holding two bishop pieces in his hands, he thought he'd do a little research on them. 

"Do you want to bring them back, nyaa?" 

"Yeah." 

"Won't it make a problem for you, nyaa?" 

"It's fine. My girlfriend is Leviathan." 

"..." Kuroka.