It’s because the present devils are crowded together with reincarnated Devils of humans, Fallen Angels and Demonic Beasts. They are troubled by their opponents. Abundant battlefields have been established and fighting methods have come in an infinite variety responding to that. There isn’t a favourable environment for training young people like this. Unexpectedly, Sirzechs and the others have looked at the current situation with the future in mind when they created these games. They make them compete with other Devils and the quality of power is raised. Since they’re a greedy group, it fits them. —What crafty guys they are.”(!) I don’t really understand it well, but basically he’s saying that they gain battle experience in the games so as not to lose to terrorism either, huh. Certainly, it’d be a problem if the inexperienced were suddenly thrown onto the battlefield. “Don’t worry, I’ll drive into you how to use your personal power and your Sacred Gear’s power. And there are plans for the matches to be set during your training camp as well. I believe they’re doing it in Rating Game style. I’ve already finished probing Sirzechs about it.”
Azazel-sensei, you seriously seem to like preparing for this…Is it really that fun?(!) “Kukuku, there’s the Boosted Gear which has begun an unknown evolution. And there’s also the holy demonic sword. Furthermore, there’s the [Forbidden Balor View]. I’ll drive my research results into them and explore their original evolved forms.”
Uwah! Sensei is giving out a dangerous laugh and thoughts! Are we experimental bodies!? With so many difficulties ahead, I fear for the future… What will happen to Kuou Academy and the occult research club? Kuou Academy Senior High School, Occult Club
Advising Teacher: Azazel (Fallen Angel Governor)
President: Rias Gremory (King), Third Year Student, Remaining Pieces, 1 [Rook]
Vice-President: Himejima Akeno (Queen), Third Year Student
Club Members:
Toujou Koneko (Rook), First Year Student
Kiba Yuuto (Knight), Second Year Student
Xenovia (Knight), Second Year Student
Asia Argento (Bishop), Second Year Student
Gasper Vladi (Bishop), First Year Student
Hyoudou Issei (Pawn), Second Year Student

“Sorry for contacting you like this, Shemhaza. So that’s why I’ll be staying here for a while.”
[Understood. However, Azazel. There are also subordinates who don’t think kindly of you for this peace—]
“It’s fine. It doesn’t matter. Leaving that aside, it’s you that I’m worried about. —Your kid will be born, right?”
[…Azazel. I…I!] “Take good care of that devil wife of yours. She’s a good woman. Coming this far to be with you even though she may be killed. Your child will become the bridge between Devils and Fallen Angels.”
[I would have been happy if I alone had been resented…! F-For you to be so…!] “Don’t cry, my comrade. I’m used to being resented. Leave the matter of Akeno to me as well. I’ll shoulder everything with these twelve black wings, so just be silent and follow me, Shemhaza!”
“—! Yes, my master!”

“—And that is the report from Michael-dono, Odin-sama.”
“These youngsters have sprung back up. It’s a bold thing to pretend to be God, that damn Michael.”(!) “What shall we do? It was unexpected that the God recorded in the [Holy Bible] has died.”
“Really, with that youngster Michael, that fake Lucifer and that naughty kid Azazel, it’s a play gathering of little brats.”
“Then, shall we teach those youngsters what we the Asgard, the true “Gods”, are like?”
“Freyr, I won’t be able to respond to a war engulfing the world after so long with my old body. However, the earnestness of these youngsters is interesting. I’ll go watch the Rating Games of the Devils.”
“They do seem interesting, don’t they?”
“It does seem fun. The struggling of these youngsters who have lost their God. Now then, what will they do from now on?”

The day before we entered summer vacation. That is, after the closing ceremony had ended. “Hello.”
“Hi. I’ll be imposing on you from today on.”
Akeno-san and Xenovia came to my house carrying some big luggage. Right after Akeno-san greeted me,
“Ise-kun!”
She embraced me! Owah! So suddenly! “I, Akeno, have arrived here at your side just now. Ise-kun…”
P-Please don’t look at me with such teary eyes… My chest tightened! “…A- Akeno and Xenovia will also be living together with us in this house…I-It was Onii-sama’s suggestion. Koneko also plans to come later.”
So said Buchou who somehow seemed to feel regretful about it. According to the story, Sirzechs-sama apparently proposed this for the sake of improving the physical relationship of our family. It was said that Buchou resisted it till the end, but my parents had consented to it, and the moving-in of Akeno-san and Xenovia had been arranged. So, as soon as Akeno-san arrived at my house, she clung to me like glue and wouldn’t let go. Uu, I’m happy, but the looks that Buchou and Asia are giving me are painful…or perhaps I should say scary…
Akeno-san, aren’t you enjoying this situation? The feeling of your breasts is wonderful, but…
“Ise-kun♪ I’ll sleep together with you tonight. Ufufu♪ I want to do things with Ise-kun in bed all night just once.”
“Seriously!? Uooooo! N-Nosebleed!”
“Asia, is it fine if I share the same room as you?”
Xenovia tried to confirm this, but that Asia was looking at me and Akeno-san with watery eyes. Ooh, it seems I’ll be scolded by Asia later! Buchou sighed while pinching my cheek. It hurts, onee-sama…
“However, this house has rather become small, hasn’t it? I’ve decided. I’ll reconstruct it during summer vacation. I’ll get in touch with my brother.”
Eeeeeh!? What will happen to the Hyoudou household from now on…? With this and that, the first school semester came to a close. Next is summer vacation! Playing all day-long as much as I like! Since I’m living together with Buchou and the others, various things are sure to happen to me— according to the plan. This plan may not come to be, probably…
After all, I am Buchou’s servant, Akeno-san’s pet kouhai, and Asia’s onii-san. Damn it! Even though summer is the important season where it’s possible for male high school students to graduate from being a virgin! I don’t want to hear the bragging of my class’ boys who have graduated after summer ends! I don’t think it’s possible, but if I’m beaten to the punch by Matsuda and Motohama, I’ll have no confidence in living. Ah, that “mufufu” pink life…It’s receding because of my training! However, I have to become strong. I have to get closer to Vali by even a little, and if I’m going to survive as a devil from now on, powering-up is required. If I want a harem, first, I need physical strength. —However! During summer vacation, I want to have sex with Buchooooooooooou!