Runa is a lesbian schoolgirl attending an elite girls' school. She has never had any romantic or sexual experience with either gender, and simply being close to someone makes her heart race. Recently, she's started seeing someone, and that girl is coming over to her place today. Suddenly called out by her father and scolded for fear her test scores will be exposed, Runa becomes so nervous that she feels the urge to pee. How things will develop between Runa and Akira, a beautiful, intelligent office lady, promises a thrilling, heart-pounding story.