His parents run away in the night, and so Tsugumi finds himself having to do the parasite in the Ryokan, a traditional hotel, where there is also I-chan, a close friend when she was little. In Ryokan, though, there are 3 brothers who shine out beauty. Who among them will be I-chan? Two of them will make fun of her, but Tsugumi be able to understand who ...!?