Trinity Seven

is a Japanese manga series by Kenji Saitō with art by Akinari Nao. It has been serialized in Fujimi Shobo's shōnen manga magazine Monthly Dragon Age since 2010 and collected in 15 tankōbon volumes as of August 2016. A light novel adaptation by Kenji Saitō with art by Akinari Nao is being published by Kadokawa Shoten. The first volume was released on November 8, 2014. An anime television series adaptation by Seven Arcs Pictures started airing in October 2014. A movie adaptation has been announced for February 2017.

Plot
Kasuga Arata lived a normal life together with his childhood friend, Hijiri Kasuga, in a small town. However, everything changed on the day of the Black Sun, and a magus (mage) appeared before him. The Black Sun caused the Breakdown Phenomenon which destroyed the town where he lives. Because of this, his normal life was artificially reconstructed by a grimoire that his childhood friend had left. The appearance of the magus led him to a new life in the Royal Biblia Academy and meeting the members of the Trinity Seven.