Tanaka Tsutomu

Yuko Mizushima encounters an alternate version of herself, and subsequently explores her sensuality in a series of connected vignettes.

Izumi has moved to an apartment near the shore. Dr. Takasaki's and his assistant Kyouko also lives near by. They became friends to each others. One day, Izumi enters Takasaki's laboratory during his absence, and she meets a monster, then, falls in love with him. (jhmd.jp)