The most popular boy at the high school who accidentally writes a love letter intended for someone else. He engages in a heartfelt secret diary exchange with Nozomi, gradually revealing his true thoughts and feelings.
Saya is a peer in Jun's high school circle.
Yuko interacts with Jun as a fellow student in their shared school environment.
Haruto accompanies Jun in social and school settings, reflecting his popular status.
Jun's initial message was meant for Erino, creating a foundational misunderstanding.
Jun writes the initial 'like' note, sparking a secret romantic correspondence.
Explore the full interactive character relationship map of Our Secret Diary