IESP-555 Sister Substitute Ryo Tsubomi Shizuku

The sisters, who lost their parents at an early age and had no relatives, were adopted by a painter. My older sister, Tsubomi, got a job at the advice of her father, and my younger sister, Shizuku, who let me go to school. However, this family was not amicable. A father who plays with Shizuku with a twisted affection. A sister who endures alone so as not to worry her sister. And finally, the older sister who has seen her sister's humble appearance sacrifices herself to protect her sister!