After a four-year absence, Ishida Kotori (QP) returns to the city where even his face instills fear amongst the locals. Trying desperately to move away from his once violent past and live an honest life, former classmate and now high profile gang member, Azuma Ryou, has other plans for QP's future.. QP: Soul of Violence is written by Takahashi Hiroshi and set within the same universe as his other works, Crows and Worst.