Trinity Seven: The Seven Magicians 13

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

Synopsis
It's a face-off between Luxuria masters as Lilith and Anna battle it out! There's only room for one of them in Trinity Seven--who will reign supreme? In the world of Demise, Arin and Hijiri partner up on an important quest--rescuing Arata! He's sleeping deep within the halls of the Terminus Library. Will the power of true love be able to wake him from his slumber...?

Chapters

 * 55. Aeshma Slave & Fourth Gate
 * 56. Purely Emotion & Return King
 * 57. Primary Decide & Save the World
 * 58. Return of Saint & Confusion

Characters

 * Lilith Asami
 * Mira Yamana
 * Lieselotte Sherlock
 * Selina Sherlock
 * Abyss Trinity
 * Master Biblia
 * Yui Kurata
 * Arsha
 * Anastasia-L
 * Arata Kasuga
 * Astral Trinity


 * Arin Kannazuki
 * Hijiri Kasuga
 * Levi Kazama
 * Akio Fudo
 * Sora
 * Ilia
 * Black Imperial Sword Judecca
 * Master Liber
 * Lugh

Introduction

 * Radix Astil