Yui Hatano, Kamitoda Ichika, and Saki Hatsumi play out a lewd lesbian love triangle in a women-only share house! When Yui moves to Tokyo, Yui up living in the share house where her best friend Yumi lives. Yui feels uneasy about living with strangers, but her roommates Ichika and Saki are so friendly that she quickly opens up to them. But it doesn't end there. One day, while Yui is taking a shower, the door to the dressing room quietly opens...