Mizu Seijuurou

Kanon, a diva who has the power to awaken the Great Demon, meets kind-hearted monsters called Onbake! In Tokyo, where the evil spirit Ipadada is rampant, the battle between the girl and the monsters begins!

This world is ruled by the Twilight. 150 years ago, war broke out between humans and demons. The humans suffered massive casualties as a mysterious phenomenon called "Twilight" took over the world. In that world, there exists a certain average boy. One day, unfairly abandoned by his party members, he's consumed by the Twilight. Two years pass. In the uninhabitable twilight, that boy struggles like mad to survive. Eventually, he returns to the barrier city with the powerful skills he acquired in the Twilight. What awaits him next? No matter what, he moves forward, believing that a blue sky awaits him beyond.

Junpei Takeda, a high school student, is childhood friends with Noriko Tatsumiya and the bully Kido Shouta. One day, during the usual course of bullying Junpei, they were suddenly summoned to a different world by the whim of "God". Summoned Heroes with cheats, or so he thought. But it turns out Junpei's stats were even worse than an average farmer. Tricked into a deathly labyrinth by the only one he trusts, he walks the journey for revenge.