Hatsumi's older (adopted) brother, who is in love with her romantically . He is incredibly kind and helpful. At the beginning of the series, he is a freshman law student at Hitotsubashi University. He isn't home much due to club activities and various part-time jobs. Shinogu was taken in by the Naritas when he was a small child.But his parents had left big debts behind when they died. Shihoko and Toru Narita are constantly fighting about where they are to get the money to repay their debts from. Thus comes the plot Mr. Tachibana comes up with, that he will pay Toru if he pretends like he is the one having the affair, so if anyone looks into the matter, his name comes up. Thus Miho and Mr. Tachibana have their affair, she dies, and Azusa forms his plan. Hatsumi falls for it, Ryoki saves her, their relationship evolves, putting her family in social jeopardy. The debt they paid off, Shinogu tried to pay them back by moving out and taking multiple part-time jobs instead of following his heart in both the matter of school and Hatsumi.