Kenja no Mago

Synopsis

Shin starts escorting Sizilien to and from school. Shin decides not to join any clubs so Augustus suggests he start his own, which the entire class insists on joining, so the Ultimate Magic Study Group is formed. Diseum's council discuss the increase in demon sightings, so Diseum orders an investigation. Kurt's father confronts Kurt about his behaviour. Kurt snaps and rants about the worthlessness of commoners and his hatred of Shin, so his father withdraws him from the academy. Augustus wonders why Kurt changed so radically and Thor reveals Kurt’s behaviour changed after visiting Mr Schtrom, a blind teacher who was exiled from another kingdom. Schtrom visits Kurt and casts a spell on him. Shin accidentally reveals another secret when he tells his friends he killed a demon when he was 10. Shin suddenly senses a demon before Kurt appears and tries to kill them all, having transformed into a Demonoid. Shin forces everyone else to run while he faces Kurt, hoping he can destroy the demon magic while sparing Kurt, but when Kurt begins a spell that would destroy the entire Academy Shin is forced to kill him by severing his head. Augustus warns him destroying a Demonoid will make him famous and his life very difficult for the foreseeable future.

(Source: Wikipedia)