Shizuku Kusano is a 20-year-old junior college student with minimal solo camping experience who meets seasoned camper Gen Kinokura during one of his excursions. Initially stubborn and determined, she refuses to depart despite her unpreparedness, coercing Gen into mentorship by fabricating a false accusation to pressure his acceptance of her company until she gains independence. This early behavior reveals a sheltered nature, expectation of unchallenged demands, and invasive tendencies like rifling through belongings to achieve goals, showcasing entitlement and boundary disregard.

Her character evolves as she acknowledges past mistakes and inappropriate conduct, expressing remorse while transitioning into a respectful, eager learner under Gen's guidance. Through repeated joint camping trips, her skills progress in equipment handling, cooking, and wilderness etiquette. She contributes by preparing meals during shared outings as gratitude for training. Though persistent throughout, her determination shifts from forceful insistence to dedicated practice, maintaining the goal of genuine solo camping proficiency.

Physically, Shizuku has orange hair cut to neck length and brown eyes. She wears casual outdoor attire like shorts and leggings, sometimes accessorized with earrings, aligning with camping's practical demands.