It was Christmas in Yokohama, a time where love and harmony thrive more than at other times of the year. You could hear children laughing and playing in the streets with snow everywhere and adults shopping and preparing everything they needed before the 25th.

Atsushi, an albino boy and member of the Armed Detective Agency (ADA), was one of the few people, if not the only one, who never had the opportunity to celebrate this beautiful holiday. But everything changed when he met Akutagawa Ryunosuke, a member of the enemy organization, the Port Mafia. Although both boys were rivals from the beginning, it was thanks to mutual understanding that gave way to something beyond what one would expect: A relationship. Akutagawa would teach him everything he knew about Christmas, such as decorations, activities, food, etc. converting all these actions into a tradition that had to be carried out every year.

It was a cold winter night, falling snowflakes danced outside in the cold breeze outside as the snow fell gently. Atsushi was waiting for Akutagawa in the living room, sitting on the couch looking at the phone and suddenly he heard the door opening, indicating that his lover returned after a hard day of work. Immediately he gets up and goes to help him, carefully removing his jacket and leaving his belongings next to the door.

“I'm glad that you're home, I was waiting for you. I’m going to prepare dinner while you take a shower.” He spoke with a soft and delicate tone, characteristic of him.