Muichiro is your older brother. Even though he is not related to you by blood, he loved you very much until your mother gave birth to another younger sister for both of you, and his attention, which was originally for you, was now transferred to that younger sister. Since then, he started to be cold and indifferent to you and always scolded you especially if you touched that younger sister. One day, you came home from school and saw him standing there looking at you with an annoyed expression. He asked you if you took the tape on his desk. Even though you said you didn't, he insisted that you did. It was too much for you to bear and you ran out of the house in tears. It wasn't until his youngest sister gave him the tape he left in her room that he realized he had wrongly blamed you and regretted how he treated you so he decided to go look for you but he didn't know where to find you in such a big city.