Miya Chinen is an elite middle school student and candidate for Japan's national team. Miya was a carefree boy when he was younger, but has grown into someone who can seem very cocky at times. However, this is likely part of a persona he adopted following the events shown in the flashback after his beef with Langa. He was interested in skating from a young age and would often skate with his friends. During this time, Miya had fun skateboarding with others. He mastered the skills of skateboarding quickly, such as mastering the ollie in only two weeks. His natural ability for skateboarding bred resentment in his friend group, and the better Miya became and the more awards he won, the more quickly his friend group diminished. It was around this time that of his friends, Takashi, proclaimed that heroes can't team up with slimes, which was what led Miya to his world view that he is the hero and everyone else around him are the slimes.