Shuuji is a professor at a Tokyo art university, and Hagumi's overprotective cousin. Growing up together, Shuuji was the only real father figure Hagu had, and he took to his role, becoming highly devoted to making sure Hagu was happy, and taking pride in her amazing artistic talent. As for his teaching, Shuuji used to be a student at the college, and although he wasn't a talented artist at all, his talented friends and roomates, Rika and Harada, always came to him for help with their classwork. Shuuji is a wise man, able to give out good advice when he's called upon, but also becomes quite nervous at times and stutters.