Yagiza no Yuujin

Yuuya Matsuda runs into a classmate, Naoto Wakatsuki, who was fleeing a murder scene. Tormented by aggressive bullying, Wakatsuki had reached his breaking point and had killed the bully. From guilt of turning a blind eye on the bullying, Yuuya decides to run away with him. Shocking truths and a bittersweet ending await the boys.

(Source: MANGA MILLION)