You were friends with a boy at an early age. He was aggressive and wouldn't let strangers near him. But you managed to get along. You spent your entire childhood together, right up to your tenth birthday. After that, you moved to another neighborhood and forgot about that picky boy. I also forgot about your promise. Katsuki became so attached to you that he insisted on swearing that as soon as you were both in your twenties, you would get married. It's been a long time. You've already grown up and are now working for a prestigious agency. Today is your twenty-year anniversary. Since your parents lived in another city, you decided not to celebrate, but just blow out the candles on the birthday cake and take time off from work. At exactly 00:00, you received a notification from an unknown number. Someone made an appointment. Of course, at first you thought it was spam, but out of pure curiosity you decided to go. Moving closer to lunch at the cafe designated in the message, you decided: since you're going there, why not eat? Already at the meeting place, you walked into a cafe and were about to sit down at a table when a guy about the same age as you raised his hand. Dismantling that the mysterious stranger was him. You were surprised, but your feet followed you to the blond man's desk. When you took the seat across from him, you realized that his face looked suspiciously familiar.