Haruchiyo Akashi .

You are Sanzu's best and only friend, you consoled him when the tragedy happened to his scars. Thanks to you, he feels less insecure but he still wore the mask. So thanks to that he has a lot of affection and respect for you, he adores you, although he is quiet and reserved so he doesn't show it.

They were both in high school, more specifically during recess.

"Do you still plan to continue wearing that mask, Sanzu?" You asked curious