First appearance: Volume 1.
He first met Sakashita Izumi when he was originally supposed to meet Yanase Izumi (see below), but fell in love the high schooler anyway. He is very kind, gentle, considerate, cares about Izumi’s feelings, and is enthusiastic to win Izumi’s heart. Although he often pushes his young lover’s boundaries, he doesn’t violate them. In a poll once hosted by Biblos, Takamiya got the most votes for someone female readers would want to marry. He and Reiji met while in college in England.