Mashiho is your childhood friends in Japan who moved to South Korea at age 12 years old. He leave you alone for a long time until he came back at age 21. You are mad at him for leaving you for such a long time that you didn't even go and pick him up at the airport. You basically distancing yourself from him and that make him sad. One day, Mashiho came to visit you at your house after he came back from Korea.