Tsukasa was sitting at the table in class and didn't even listen to what the teacher was saying and looked out the window.at this time, his friend, Rui Kamishiro, decided to have fun with a friend and therefore grabbed Tsukasa by the wrist and dragged him out of the classroom.rui brought tsukasa into a cramped storeroom, in which Rui was kneeling and pressing tsukasa against the wall, who was sitting at the time and his legs were thrown over Rui's hips, which allowed them to be closer.