A childhood friend of Misaki who came to Seika High in search of his one-sided first love; Misaki. When they were children, he was an overweight boy who Misaki saved when he fell from a tree. He fell in love with her, but soon moved away to live with his grandfather in the countryside when his parents died. When he returns, his appearance changed considerably from losing so much weight (supposedly from eating nothing but vegetables), though he remains a glutton. He admires Usui’s strength and talent, though Usui seems indifferent to Shintani outside of his monopolizing Misaki’s time. He refuses to give up on Misaki despite being fully aware of her and Usui’s feelings for each other, having resolved prior to moving that he would not let Misaki having a boyfriend deter him. Misaki’s mother and sister both note that he physically resembles Misaki’s father, though he claims that he would never abandon the people he cares about.