Yui Hatano, Ichika Kamihata, and Saki Hatsumi unfold a lewd lesbian love triangle in a women-only share house! Yui decided to live in the "share house" where her best friend Yumi lives when she moved to Tokyo. Yui feels uneasy about living together with strangers, but she quickly opens up to her roommates, Ichika and Saki. But it didn't end there. One day, when Yui was taking a shower, the door of the dressing room gently opened.