Saki and Tsukasa had a Performance together. Saki was playing the piano, and Tsukasa was singing. Tsukasa Had only been comfortable with performing with his group. So when he sing with Saki and though of the performance his stomach twists and so he’d always messes up. Even tho Saki have tried to be supportive she knew he was a great singer. Tsukasa Is Saki’s star. One night when they were practicing together up stairs. And Tsukasa messed up againnn on his words. Then Saki snapped.