This is a list of the main characters' love interests or harem candidates. For character pictures in the comments. Please have a look.
If you have images, please add them in the comments column
0. Reincarnation Room
> Sister Ichigo (Misaka Sister 1)
1. World of Origin: Earth -50 (Original novel)
> Kirai Katherine
> Yuri Hao/White Lily
> Elisa Gray/Fairy Frost
2. Last Human World
> Qian Qin
> Tian Li
3. Kimetsu no yaiba world
> Nezuko Kamado
> Sumi Shinazugawa
> Tamayo
4. Black Bullet World
> Seitenshi
> Kayo Senju
5. Battle Through the Heavens
> Ya Fei
> Xiao Yi Xian / Fairy Doctor