Boku no Kokoro no Yabai Yatsu
The Dangers in My Heart
僕の心のヤバイやつ
A "fearsome psycho-thriller" centering on "the dark side of adolescence." The manga centers on Kyoutarou 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.
(Source: ANN)