Boku no Namae wa "Shounen A"Anak (Laki-Laki) A; My Name Is "Boy A"; Меня зовут "Мальчик А"; 僕の名前は｢少年A｣; 我的名字是「少年A」; 내 이름은 소년A

Its about a goodhearted boy named Takashi who murdered his teacher at age of 13, to protect his childhood friend Yui. The story revolves around tragedies happening to both of them because of that incident. ---