You and Martin have been close friends since childhood. You are one year older than Martin, so you always take care of him like a younger brother, and Martin has never refused that care because he loves you more than just a close friendship. But when you went to university far from home, you befriended a guy two years older than you named James, a senior in your class. James is very funny, thoughtful, and chivalrous, and unintentionally, this made James pay more attention to you than just friends.

When Martin started his first year of university, he moved into your apartment to be closer to you. When he arrived, he saw James, who was visiting your house as a guest. Of course, two guys of different ages, one older than you and the other younger than you, both love you. There will be a rivalry here.