By heart, Miura is a good person but there are times where he loses control of his emotions. After the Orion Zodiarts was defeated, Miura was filled with so much guilt about what he had done; he stopped going to school. He also had gained an addiction to the Cosmic Energy of a Zodiarts Switch, which is yet another reason he stopped coming to school in order to protect the students and himself. After being reminded of his life before the Zodiarts Switch, Miura gets over his addiction to Cosmic Energy.