In this "romantic comedy but sometimes serious magical school story," life as Arata Kasuga knows it is wiped out by a bizarre incident known as "Collapse Phenomenon," which causes worldwide destruction and takes his cousin Hijiri Kasuga to the next world. To resolve the "Collapse Phenomenon" and bring back Hijiri, Arata enrolls in the Royal Biblia Academy. Waiting in the school are seven beautiful female magic usersthe Trinity Seven.
The characters and their development is really something since the anime focuses on one girl at a time while focusing on the MC. The balance of Ecchi/comedy is really good, but also adds good action to it . My main problem was it was to short and left us with an open-ending hinting a second season but it mostly likely won't happen. Also the love story isn't good but it tries to touch that area.