Lez Ane ni Otoko o Oshiete Yarimashita ~Kanojo wa Ane ni Netorareteimashita~

Today was my date with my girlfriend Tsukasa Yara, but she called me yesterday to say no and we had no plans to go out. I was wandering around the date course to look around anyway, when I saw her, next to her was my sister Saeko, who I don't get along with well! "Why are they together, when she didn't want to go on a date with me?" Seeing them together, I couldn't help but lose my temper. I found myself following them. Then they walked into a love hotel holding hands without my knowledge.