Magikano, Hidan no Aria Recommendations
Both animes were in a school setting, with an extra harem genre.
Both animes has a girl who came out of nowhere and then sudden, enters the muchachos' (male lead) life and messes with it.
Both animes features the muchachos having special ability.
Both muchachos simply wanted a simple and quite life.
Both animes have one member of the harem who's a yandere.
The lead chicas in both animes were also tsundere, and were also feared by their muchachos.
Oh, by the way,just recently, both muchachos' voice actors also did the voices to other character from different animes. The voice actor of Magikano did the voice of the lead