Koro-sensei Quest! Episode 6 English Subbed Episode Title:The Silver Berserker.Episode Description:Itona Horibe the Silver Berserker crashes through the classroom, and his guardian Mage Shiro tells Koro-sensei that Itona will be the new Demon King. Itona attacks with tentacles of his own against Koro-sensei, while Shiro takes his leave. Tōka Yada and Hinano Kurahashi host a game show for Koro-sensei and Itona, asking them a series of questions to determine who deserves to be the Demon King. However, neither of them prove worthy enough. Itona yanks out his tentacles when he finds out that he needs a sense of humor. The next day, Itona joins the class.