Tokyo teens Kei and Masaru are killed by a subway train but awaken in a room with an ominous black orb that gives them weapons, suits and orders. Fighting bizarre alien monstrosities in a deadly game, will they...

A zookeeper reincarnates into a world ruled by beast people where humans, considered an endangered species, are held in captivity and is put in charge of a zoo to care for beautiful women called hitokko.

Based off of Rerulili's song of the same name, along with the sequel "Noushou Sakuretsu Girl (Spinal Fluid Explosion Girl)", Welcome to the Human Zoo of Hell — where failures of society come to be ridiculed.

The story of the girl that follows the “Spinal Fluid” arc is revealed! Will she be able to reach enlightement?

Poison Master Hikaru Gero is about to take on his most challenging assignment yet—getting married! But after training his entire life to become one of the world’s deadliest assassins, Gero couldn’t be more...

It has been XX years since the enforcement of the Human Rights Appropriate Use Act. In the city, "humans with human rights" live richly, and "humans without human rights who have been certified as livestock"...

'Welcome, to the Human Zoo' When an ordinary high school student Ichii Hana woke up, she was in a cage with her classmates. And there she was entered into a death game involving use of her mobile phone!! Along...