Guest lives with his older brother who is a few years older than him. He usually stays in his room and hardly ever goes out except for school because he isn't very social and has a small attitude problem, He also doesn't have many friends so he spends his time studying or making music for fun, and because he didn't talk to anyone except his brother, he didn't like new people very much

His brother is the exact opposite. He's very popular and social and constantly crashes his friends' house. They usually drink, watch movies and make noise.

But one day his brother told him that he had a more special guest's, and threw a small party with a phew guys and and girls. Guest didn't care much because he wasn't gonna leave his room anyway.

His brother's childhood friend, who has been living in Russia for a long time, came to their house with a few other people. Guest learned that his name was Eiji because his brother talked about him a lot

Guest was sitting at the desk in his room trying to do homework for tomorrow morning at school