HIGHSCHOOL DXD:

1. Takes place after the current story, with it revealed that Great Red faked his death to avoid dealing with them. It makes no sense that something that exists in the void in between 2 universes, could be defeated! It & Ophis should be unopposed as the end all & the only reason their tied with 666 is because none of their strength, nor The Dragon Emperors nor the Biblical God could be measured! GR & O are strongest followed by DE & then 666 & BG!

2. Ingvild leaves Issei's peerage to start her own area as an ultimate, so Ravel can become queen & Asia can be a dual Bishop thus stronger, but Ingvild is still a part of his harem.

3. Bennia be traded over to Xenovia, so Xenovia can be a knight of 2!

4. Rossweisse becomes the Rook of 2!

5. all of Issei's pieces are mutation pieces.

6. Fairy Pieces from unorthodox chess games are added in: 2 Amazons, 2 Empresses, 2 Princesses, 2 Jesters, 2 Archers, 2 Mann, 2 Camels, 2 Centaurs, 2 Dabbaba, 2 Ferz, 2 Giraffe, 2 Grasshoppers, 2 Kirin, 2 Nightriders, 2 Phoenixes, 2 Threeleapers, 2 Zebra, 2 Lame Zebra & 16 Berolina Pawns that can promote into Berolina pluses & then Sergeants! It'll come with a 16 by 16 board with the pieces set up:

1st row: 4 Berolina, 8 pawns, 4 Berolina

2nd: 4 Berolina, 4 pairs of new pieces, 4 Berolina

3rd: 8 pairs of new pieces

4th: 4 new pieces, 8 traditional back row pieces, the same 4 new pieces in reverse order, so the middle functions as a mirror with the only difference being the king on 1 side & the queen on the other

7. Issei performs a miracle & breaks the rule that pieces of different kinds can't be traded & gets Yubelluna as his Amazon of 2.

8. All of Vali, Genshirou & Issei's pieces are 1 of a kind, meaning 1 Bishop of 2 pieces, 1 Pawn of 8, etc. that's 24 servants each, instead of 63!

9. No servants that represent more than 1 type of piece.

10. Akeno & Kuroka discover they're the reincarnations of the dead gods Freya & Aphrodite, there were 2 different Aphrodites in the myths, so one can be the reincarnation of both.

11. Unorthodox Suits, Colors & Cards:

Cups, Coins, Swords, Roses, Bells, Acorns, Shields, Leaves, Crown, Anchors, Rackets, Wheels, Moons, Stars, 4-leaf Clover, Tears & Waves;

Blue, Yellow, Purple, Green;

Soldier, Knight & Lord

12. Akeno has 2 peerages, Evil Pieces & Fallen Brave Saints.

13. Kuroka & Koneko will have their pieces removed & become pure NekoShou, so they can reproduce, but will stay as Issei's familiars, with Koneko's familiar also becoming Issei's.

14. Samael as the main villain, with Satanael from Slashdog as the one that released him, & Zaorama Nebiros leading him to the 12 Malebranche & Samael forcing them to submit to him, then releasing all the evil Dragons & Kokabiel, so the supporting cast has someone to fight, while the Main characters focus on the Malebranche.

15. Samael & Satanael release 666 after the evil dragons are defeated, as a distraction to escape with the remaining Malebranche, but Issei, Vali & the rest help kill it, so the Satans & Gods can come back!

16. Issei vs Sirzechs full power sparring.

17. Genshirou gets all of Vritra's sacred gears & Fafnir's sacred gear from Aza.

18. Issei kills Samael, Vali kills Malacoda, Tobio kills Satanael, Genshirou kills Barbariccia & Orochi (not at the same time), Sairaorg kills Zaorama & the rest don't matter.

19. Ajuka uses their remains to create a Malebranche system without sentience that can empower devils & their comrades.

20. Tannin is granted the tittle of Dragon king again.

21. Rias, Sona & Seekvaira get boosted by Ajuka's Malebranche.

22. Seekvaira acts as the one platonic female friend Issei has.

23. Issei combines the 2 Ascalons into 1 & duel wields them with Excalibur & the Ascalon prototype on his tail.

24. Issei gets Tiamat & some hell hounds as familiars & Akeno gets the 9 headed Hydra.

25. Issei has an orgy.

26. Roygun having to earn her redemption & become a part of Issei's peerage.

27. Genshirou has orgy.

28. Raynare & her comrades are resurrected & revealed to have been brainwashed by Satanael. Raynare & Mittelt are revealed to Aza's daughters & they & Kalawarner become Akeno's face cards & help with the evil dragons & Malebranche. Raynare & Kalawarner join the Harem!

29. Akeno's Fallen mode eventually has 12 Fallen angel wings & 2 devil wings, she should've at least 8 FA wings by the start, because of how strong the Evie would've pushed her far.

30. Irina also has 8 wings & will eventually get 12.