Hysteria (hiatus?)

A teenage boy lived his life carefree in-spite of his scary looks, yet always helping his mother who had seen one of the worse parts of humanity. He was feared by others, but didn't really care about it. All he cared about was to kill the man who made her mother's life miserable, but what happens when he achieves that task but at the price of losing his own life. Watch his journey into the next life.... P.S English is not my first language, so there might be some grammar issues. Also this is my first ff so i don't know how it'll turn out, and the gender-bender tag is for the MC.