Saitou is an ordinary handyman that gets transported to another world where his skills are very useful. He starts to really understand what it means to be needed.

Ryugasaki-San in my class is a lizard-man, and as such she will shed several times a year.
It appears that such a time came, and sooner than i expected.

Meet Teragane Haruto, your typical high school student without any aspirations or wishes of his own. He is the kind of guy that prefers to be with his friends fooling around and playing all day instead of worrying about his future, until a change in his life suddenly burned down his normal every day life to cinders. An eyed pillar sprung out from the earth, with the intent of killing any human that came into its gaze like it was a mindless murderer.

Why is this happening? And what could have brought this amount of hatred unto human kind?