"Harem Camp!" is a romantic comedy manga that centers around a group of characters brought together by a summer camp experience. The protagonist, a high school student named Haruto, finds himself unexpectedly working at a remote summer camp alongside several female classmates. The camp setting serves as the backdrop for a series of humorous and lighthearted interactions, as Haruto navigates the challenges of his new environment and the dynamics of his relationships with the other camp staff.

The main cast includes Haruto, who is portrayed as an average, well-meaning teenager, and a group of female characters, each with distinct personalities and quirks. Among them is Aoi, a diligent and responsible camp leader; Yuki, a cheerful and energetic girl with a love for outdoor activities; and Rina, a shy and reserved girl who gradually opens up as the story progresses. The interactions between Haruto and the girls are driven by comedic misunderstandings, playful banter, and moments of genuine connection, all set against the idyllic and occasionally chaotic backdrop of camp life.

The plot unfolds through episodic adventures and challenges faced by the group, ranging from organizing camp activities to dealing with unexpected mishaps. Themes of friendship, teamwork, and personal growth are explored as the characters bond over shared experiences. Romantic tension is a recurring element, with Haruto often finding himself at the center of attention due to the affections of the female characters, leading to humorous and sometimes awkward situations.

The manga balances its comedic tone with moments of heartfelt emotion, particularly as the characters confront their insecurities and aspirations. The camp setting provides a unique framework for character development, allowing the story to explore themes of self-discovery and the importance of human connections. The narrative maintains a light and accessible tone, making it suitable for readers seeking a blend of romance, comedy, and slice-of-life storytelling.