"Cute High Earth Defense Club HAPPY KISS!" is a comedic magical boy anime that serves as a spin-off of the "Cute High Earth Defense Club LOVE!" series. The story is set in the coastal town of Hoshinomiya, where the Earth Defense Club, a group of high school boys, is tasked with protecting the world from mysterious threats. The club members—Yumoto Hakone, En Yufuin, Atsushi Kinugawa, Io Naruko, and Ryuu Zaou—attend Binan High School and lead seemingly ordinary lives until they encounter a talking pink wombat named Wombat. Wombat grants them the power to transform into magical warriors, known as the Battle Lovers, to combat evil forces.

The narrative begins with the arrival of a new transfer student, Kintarou Taira, who quickly becomes entangled in the club’s activities. The group faces a series of bizarre and humorous challenges, often involving strange creatures and surreal situations. These threats are typically orchestrated by a rival group, the Kintarou Defense Club, which seeks to disrupt the peace of Hoshinomiya. The conflicts are resolved through the Battle Lovers' teamwork, their unique magical abilities, and their ability to harness the power of love and friendship.

The series maintains a lighthearted and satirical tone, parodying traditional magical girl tropes by placing male characters in roles typically reserved for female protagonists. The characters’ personalities and dynamics drive much of the humor, with Yumoto’s cheerful innocence, En’s aloof demeanor, Atsushi’s responsible nature, Io’s intellectualism, and Ryuu’s flamboyant confidence creating a balanced and entertaining ensemble. Kintarou’s introduction adds a new layer of conflict and camaraderie, as his presence challenges the group’s established dynamics.

Throughout the series, the Earth Defense Club navigates both their battles against evil and the everyday challenges of high school life. The story emphasizes themes of friendship, self-discovery, and the importance of embracing one’s individuality. The episodic structure allows for a mix of standalone adventures and overarching plotlines, culminating in a climactic confrontation that tests the bonds between the characters. The series concludes with a resolution that reaffirms the group’s commitment to protecting their town and each other, leaving room for future adventures.