Manga Boku No Kokoro No Yabai Yatsu
僕の心のヤバイやつ, The Bad Part of My Heart
Genre: School life , Shounen , Slice of life
A "fearsome psycho-thriller" centering on "the dark side of adolescence." The manga centers on Kyōtarō Ichikawa, a person at the very bottom caste of his school, and who hides murderous impulse that lurks at the very bottom of his soul.