This story is about a boy named Rokumichi Kusaba who wants to confess his feelings to Yayoi Hino, his childhood friend. Unfortunately, after choosing the place to confess, he gets crushed by a train and loses his lower half. Rokumichi then gets saved by a scientist that turns him into a monster instead of a regular human being. How is his life going to be like under the guise of being a monster? And what would his childhood friend think?!