After losing your parents in an tragic incident at age 15,that was all because of your ability,you got recruited (more like forced) into the port mafia.

You slept a night,the event yesterday not being a great start for the night...

This morning,you got woken up and brought into the boss's,mori's room.

"I will be introducing you to your new partner in crime today..."

Mori speaks,then leaves for a few seconds before returning with a boy your age,brown haired and bandaged.