A/N: I thought of this one for about a few months or so. Hopefully, you all like it and also put crossover characters.

Story name: Son of the Supreme being

Story info: This story is about an adopted son of aiz ooal gown, and yes, an isekai one was found when he was transported there and the Supreme being took him in and used a ritual to become his heir to the throne of nazarick.

Name: (Y/N) (L/N) old life prologue, (Y/N) ooal gown chapters.

Hair color: Brown old appearance in prologue, Black new appearance.

Eye color: Gray old appearance, Crimson red new appearance.

Personality: Kind, caring, sadistic, sarcastic, thoughtful, knowledgeable, professional, focused, strategist, athletic, honest, and lustful only to his chosen mates.

Likes: His family, his mates, spending time with his father, showing arrogant fools his place, peace and quiet, spending time with his mates, training, learning, adventure, swimming.

Dislike: Anyone who dared insult his his family, arrogant mongrels, being bothered, being interrupted, those who stand of his way, those who insult his mates.

Abilities and skill.

Swordsmanship

Hand to hand combat

Magic caster

Shape-shifting

Curse wielder

Slime manipulation

Harem:

1. Albedo
2. Shinsha (that time I got reincarnated as a slime: isekai memories)
3. Shalltear
4. Aura (she's 76, I checked)
5. Yuri alpha
6. Lupusregina beta
7. Narberal gamma
8. Delta
9. Solution
10. Entoma
11. Antilene
12. Cixous
13. Clementine
14. Edstrom
15. Evil lord envy
16. Evileye
17. Tia
18. Tina
19. Tira
20. Scama
21. Renner
22. Calca
23. Remedios
24. Neia
25. Kelart
26. Lilynette
27. Increment
28. Lumbered
29. Lakyus
20. Tuareninya
31. Alpha (Eminence in Shadow)
32. Beta (Eminence in Shadow)
33. Epsilon (Eminence in Shadow)
34. Delta (Eminence in Shadow)
35. Zeta (Eminence in Shadow)
36. Eta (Eminence in Shadow)
37. Gamma (Eminence in Shadow)
38. Artoria alter (lancer fate grand order)
39. Olga (kuroinu)
40. Chloe (kuroinu)
41. Irene (fairy tail)
42. Selene (fairy tail)
43. Milim (that time I got reincarnated as a slime)
44. Rias (DxD)
45. Irina (DxD)

A/N: I hope you all like this idea to make it someday.

Peace out Readers/Followers/Authors