Keishi Ayasato's Manga List

Kaito Sena's life hasn't exactly been easy. Unfortunately for him, death isn't about to get any better. Summoned by none other than Elisabeth Le Fanu, the "t*rture Princess," Kaito has to choose what he wants for his second life-be her butler, or die a long, painful death by t*rture. What is he to do but become her servant...and help her eliminate the fourteen ranked demons wreaking havoc in the world!
See the original light novel come to life in this gritty manga adaptation!

A VOW THAT CANNOT BE BROKEN! It's been years since the kihei appeared without warning and overran the earth. To combat this threat, humanity established the Twilight Academy to train students as soldiers, though most die before graduation. During a mission, Kou Kaguro's squad is attacked, and he must face his fate as yet another student casualty...or so he thought. A girl in white appears during his final moments and swears to protect him, filling a hole in his heart and setting them both on a path of love and despair.

I AM THE t*rture PRINCESS, ELISABETH LE FANU.I AM THE PROUD WOLF AND THE LOWLY SOW.A beautiful woman appears before Kaito Sena following his tragic death and rebirth into another world. Introducing herself as the t*rture Princess, she orders him to become her loyal servant. Naturally, his response is..."Hard pass." And so Elisabeth presents him with two choices-become her butler or be t*rtured to death. After rethinking his hasty decision, Kaito is forced to wait on Elisabeth hand and foot, as well as aid her in her mission as the t*rture Princess, which is the subjugation of the fourteen ranked demons and their contractors. But there's a catch. Once her mission is complete, Elisabeth is fated to die alone-forsaken by heaven, earth, and all of creation.