>Akumetsu (アクメツ) is a shōnen manga
>Shou then proceeds to injure several people and execute the ranking counselor, going under the name of Akumetsu (meaning "destroyer of evil") only to be shot by police officers and his head exploding. But the event is just the beginning for Akumetsu, as he shows up to school, still alive the next morning. His goal is to "kill every evil man" in Japan, be it Bank directors, bike gang members or inactive police commissioners.
yep, sounds like shounen to me