Shun Kaidou

海藤瞬, The Jet-Black Wing

"His body's Grade 11 but his mind's Grade 8." -Saiki Kusuo

Shun is a young man who considers himself to be the "Jet-Black Wing", a lone hero fighting against the evil organization Dark Reunion. He also believes his powers stem from a dark being living within his arm. To his friends and peers, including Saiki, he's simply an immature kid playing a game that only he understands.