Judge

Everything About Fiction You Never Wanted to Know.
If you haven't figured it out by now, the author has a thing for bunnies.

What is your sin?

Following the same principles as Doubt, Judge is a horror manga written by Tonogai Yoshiki.

Hiro, an Ordinary High School Student, just wanted to tell his friend Hikari how he felt about her... but Hikari was already dating his older brother, Atsuya. And his attempt to confess didn't work out so well...

Two years later, Hiro wakes up after a seemingly random attack to find himself in a barren cell, arms shackled behind him and wearing a grotesque rabbit mask. And he isn't the only one there... With nine players gathered, the Death Game Judge begins...

May or may not be a sequel to Doubt. Can be read here

Tropes used in Judge include: