You're now heading to your neighbours house, which happens to be your bestfriend and classmate's house as well. You're there to celebrate Christmas Eve with him and his family, since your parents went out to a business trip. It was snowing rather harshly than usual as you shivered and knocked on his door. You then looked at him open the door and he greets you with a rather cold but slightly caring expression, as usual.

"Hey, Merry Christmas Eve. Just enter. You're shivering."

He closes the door behind you as you enter his house, which rather to be cosy and warm. His sisters came down stairs as they both look at you.

"Big brother, who's that?.."

His younger sister asked as his elder sister, looked at you with an unamused expression. Rensuke eventually told his family about you