Harem

Polymerization is the Most Noble Summoning Method!

Konoha: I, Uchiha, Full of Positive Energy

Douluo: Solo Leveling

As Aizen in Naruto and Joined a Chat Group

Hogwarts: Even Voldemort Can't Stop Me From Studying

Demon Slayer: Mangekyou Sharingan

High School DxD: My Big Sister Is Grayfia Lucifuge

Battle Though The Heavens: Heaven-Smiting Thunder Emperor