Your lover's older sister is prettier

I Lived Together And I Was Thinking Of Marrying Her When I Got A Job After Graduation. One day, her older sister, Yuko, visited her in the room where she was living with her, and after she fell asleep, she and her younger sister had a lot of fun. A day later, while she was wandering around, her older sister came to visit and continued to hang around for three days until she returned.