Kurashita Tsukimi doesn't have much self esteem and sees herself as an unattractive person. She lives in a house with other women just like her. Tsukimi is passionate about Jellyfish, and one night, when she observes a Jellyfish tank in the pet shop near her apartment, she notices that two Jellyfish that aren't allowed to be in the same tank are put together. She attempts to talk to the shopkeeper but can't talk properly which results in her being kicked out. A mysterious, beautiful woman outside notices her and helps her. However, the next morning, Tsukimi, who let the woman sleep over at her apartment, discovers that the woman is actually a man.