Trinity Seven: 7-Nin No Masho Tsukai

Arata Kasuga's ordinary life is destroyed by a bizarre magical phenomenon known as the Breakdown Phenomenon, which decimates his hometown and swallows up his cousin Hijiri. Determined to save her, Arata enrolls in the elite Royal Biblia Academy to learn the dark arts of sorcery. To uncover the mystery behind his cousin's disappearance, he must team up with the Trinity Seven, a group of seven incredibly powerful and beautiful female mages who each master a different sin. This action-packed harem fantasy blends intense magical battles, ecchi comedy, and a high-stakes quest for salvation.