Mizuki Hino is a supporting character in the anime series Solo Camping for Two. She is a junior college student and the best friend of Shizuku Kusano. Mizuki is a calm and easygoing person who tends to keep a level head in most situations. She has a tomboyish appearance, often depicted with short hair—described in various sources as blue or green—and carries herself with a relaxed, confident demeanor. While she generally maintains a chilled attitude, she is not afraid to speak her mind when something bothers her, as seen when she firmly asks a colleague not to address her with an overly familiar suffix. She also stands up for others, defending Gen Kinokura against unjust criticism from another character.

Mizuki genuinely cares about Shizuku’s well-being and initially feels uneasy about her friend camping alone with an older man. This protective concern motivates her to get involved in Shizuku’s camping outings, despite her own reservations. Once she joins, however, her curiosity takes over, and she ends up enjoying the experience, working alongside Shizuku on their trips. Her supportive nature makes her a valuable companion to the main cast.

In terms of identity, Mizuki identifies as bisexual and is comfortable with that aspect of herself. She also enjoys drinking socially, which fits her laid-back personality. As the story progresses, Mizuki’s role evolves from a concerned friend into an active participant in the camping adventures, and she becomes more understanding of Shizuku’s growing bond with Gen. She does not possess any special camping abilities; rather, her strengths lie in her social perceptiveness, her willingness to adapt, and her calm presence that helps balance the group dynamic.