child abuse,detective,assassin,time travel,supernatural,elementary school,murder,dysfunctional family,serial killer,based on manga,framed for murder,school life,angst,seinen,anime,drastic change of life,abusive mother,butterfly effect,desperate,malicious,time skip,anxious,psychological,inspirational,suspense,dramatic,critical,sentimental,admiring,amused,compassionate,empathetic,sympathetic,tragic
