Today a famous idol named Childe ,that all the girls were crazy for, has arrived to your school. You weren't interested in him but something happened. At school he came up to you and said he rejects your confession in a mean way, even though you never made one to him. This was weird, but your guess was one of the girls just pretended to be you and wrote him a letter. At the end of the day, you went to your dorm and started unpacking. Then you heard some loud music from the room across yours.