Trinity Seven: The Seven Magicians

 (トリニティセブン 7人の魔書使い Toriniti Sebun: Shichi-nin no Masho Tsukai?) is a fantasy romantic comedy harem manga series written by Kenji Saitō with art by Akinari Nao. The series has been serialized in Fujimi Shobo's shōnen manga magazine Monthly Dragon Age since 2010 and currently collected in eleven tankōbon volumes.

On October 10, 2014, publisher Yen Press announced that their acquisition of Trinity Seven with the first volume released on May 19, 2015.

Fujimi Shobo
Everyday is a normal day in the small town where Kasuga Arata lives. However, everything changed on the day of the Black Sun, and following it, a magician appears 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. Just what is the purpose of the magician coming to the town? What will he do with the Grimoire's keepsake?

Yen Press
Arata Kasuga transfers to the Royal Biblia Academy to solve the mystery of the destruction that is ravaging the world and—more importantly—has stolen his cousin Hijiri from him. It's a tough road that lies ahead of Arata, but nothing's impossible when you have seven beautiful girl - each a master of her own magical art - at your side!

Localization
On October 10, 2014, North American publisher Yen Press announced during their New York Comic Con panel several acquisitions of nine manga and graphic novel licenses, including Trinity Seven. The first volume is currently slated for release on May 19, 2015.

Trivia

 * Volume 11 was released with a different artwork cover with Lilith in a limited bundle with the OVA of the anime.Trinity Seven vol11 cover Lilith MN.jpg
 * Volume 17 was released on the same day as the first volume of Lieselotte Chronicle.