Ep. 4: Akatsuki convoca o Dispositivo de Armas e confronta Kaidou Motoharu

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Akatsuki figures out how to summon his Arms Device, a large demonic sword previously used by Miu's Dark Lord father, and after dispatching the monster, exposes the culprit behind the attack as one of Onizuka's victims who wanted to frame Onizuka. The culprit is subsequently frozen in ice by the student council president. After helping Miu recover with healing magic and helping her come to terms with losing her father Akatsuki meets Class A student, Kaidou Motoharu, who attacks him to measure his strength. (Source: Wikipedia)