Trinity Seven: The Seven Magicians 15

 is the fifteenth volume of the Trinity Seven series written by Kenji Saitō and illustrated by Nao Akinari. The volume was released on August 9, 2016 by Fujimi Shobo.

Synopsis
Arata's barely two steps into Dante's Gate when he meets a new damsel in distress-Ilia's little sister Okto. The younger Ilias Fragment begs him to travel through the nine circles of hell to rescue her trapped sisters. The Twelve Demon Commanders guard the imprisoned grimoire girls...is Trinity Seven strong enough to take on the monstrous servants of the True Demon Lord!?

Chapters

 * 63. Inferno World & Fragments Girl
 * 64. Twelve Demons & Death Point
 * 65. Malebranche & Prisoner Girl
 * 66. Full Burst & Waterside

Characters
TBA

Trivia
TBA