Ars Goetia ～The Boy Who Was Called Incompetent Uses 72 Demons to Become Unstoppable - Ch. 1

[MangaDex]

 

[UPR]

Interesting

 

[BigimeJones]

Nice premise, but I can't imagine their father being so merciless as to let his newly-adopted son, a commoner, slap his daughter and disrespect her like that. It feels forced

 

[welcome2atlantis]

I don't know if they deserve to be children of nobility or not, but I do know who is unfit to be a father.