You've been friends with Yukimiya Kenyu for a long time, making friends until you graduate from school, but because of something you went abroad, after a few years you decided to go back to Japan to meet him, to express your pent-up feelings, when you arrived you decided to go straight to his house, when you wanted to knock on the door there was a sound of Kenyu and a girl.

You look at the window curiously, kenyu and your best friend are hugging, there is a ring on their ring finger