Hina Setoguchi is a second-year student at Sakuragaoka High School. She sports distinctive pink hair often tied in pigtails and has purple eyes. Her standard outfit is the school uniform: an aqua blazer paired with a purple pleated skirt and a red necktie. Close friends with Kotarō Enomoto, she also forms a friendship with Hiyori Suzumi. Hina originally appeared in the work "Zutto Mae Kara Suki Deshita" before joining this series.