Keiko can't stop thinking about her mature classmate, J. One day, she hears a rumor that J is having a physical relationship with their homeroom teacher... The story which is a spin-off to Kaoruko Himeno's novel " Tsu, I, Ra, Ku," sensitively depicts the anxiety and irritation that every girl experiences during her teenage years. Contains part 1-6 of **Lavender Note** (ラベンダー・ノート), and part 1-5 of **Wonder Room** (ワンダー・ルーム)