Ost Trinity Seven

In this "romantic comedy but sometime 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 users — the Trinity Seven.

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Opening:
"Seven Doors" by ZAQ

Ending:
"BEAUTIFUL≒SENTENCE" by Magus Two
"SHaVaDaVa in AMAZING♪" by Yui Levi♡
"TRINITY×SEVENTH＋HEAVEN" by Security Politti
"ReSTART "THE WORLD" by TWINKle MAGIC
"CREATION ReCREATION" by BibleArt (Sora (CV: Rie Kugimiya) & Hijiri Kasuga (CV: Ayaka Suwa))

Others:
Trinity Seven: Magus Music Archive
Trinity heaven7: MAGUS MUSIC REMIXES