Karen has been working part-time at a convenience store for a month to fund her graduation trip.Aoi fell in love with Karen at first sight from the first time she met Karen, who has a wonderful smile.However, Karen has a boyfriend, and Aoi spends her days feeling frustrated because of her unrequited love... One day, Aoi notices that Karen isn't feeling well, and asks him if she wants to become stronger... and gets drunk. When the two of them kiss each other's skin without letting their excitement cool down, the emotions that have been blocked overflow and they seek each other.