Yūya Hiyama

One of Nozumu's childhood friends and an aspiring student in aeronautics.

Role in Plot
During the beach episode, he tells Nozumu Futami he is planning on confessing his love to Kaoruko Ichijō, which causes Nozomu to act strangely around the Ichijō sisters. He returns at the end of the series in which he tells Nozumu that they will be friendly and respectable rivals for Kaoruko's affections.