Amamizukan, an apartment building in Tokyo, is a interesting group. All the girls there are crazy otaku's who act rather strange. Tsukimi Kurashita is the main girl who's love of Jellyfish comes from her mothers wish that she would wear a dress made to look like a jellyfish. Sadly, her mother got sick and passed away. One day, she met a strange women by the name of Kuranosuke Koibuch who turns out is actually a cross-dressing boy.