Kobu Komaki and Hishikawa Toshi are both high school girls. As always, Toshi has a crush on Komaki! One day, they find themselves alone in an empty infirmary... Unprotected, Komaki is sleeping on the bed. This opportunity will never come again!!! Determined, Toshi sneaks up on the sleeping Komaki――. However, from there, the situation takes an unexpected turn!?