In the past, he had a girlfriend called Mizue Sakamoto and in episode 14 they met again by accident at the train station with Kahoko and Len, where she mistook Kahoko as Tsuchiura's girlfriend at first, after telling her that she is not his girlfriend she asked if Kahoko was Len's girlfriend. Tsuchiura is the star of the soccer team he is the team midfielder. He is very skilled at soccer and even outdoing some third year students and whenever he plays, there will always be girls cheering for him. As told by Mizue, he is also in the basketball club when they were in middle school.