"Waisetsu Missile" is a manga series that blends elements of comedy, romance, and ecchi genres. The narrative centers around a high school student named Takeru, whose life takes an unexpected turn when he encounters a mysterious girl named Mii. Mii is revealed to be an alien from a distant planet, sent to Earth on a mission to gather data on human emotions, particularly those related to love and intimacy. Her method of data collection involves using a unique ability to fire "missiles" that cause people to experience heightened states of arousal, often leading to comedic and chaotic situations.

Takeru becomes Mii's primary subject of study, and their interactions form the core of the story. As Mii continues her experiments, Takeru finds himself increasingly entangled in her antics, which often result in awkward and embarrassing scenarios. Despite the absurdity of the situations, a genuine bond begins to develop between the two characters, with Takeru gradually becoming more protective of Mii and her mission.

The series explores themes of human emotions, relationships, and the complexities of intimacy, all while maintaining a lighthearted and humorous tone. Supporting characters, including Takeru's classmates and other aliens, add depth to the narrative, creating a dynamic and engaging storyline. The interplay between the characters and the ongoing development of Takeru and Mii's relationship drive the plot forward, with each chapter presenting new challenges and comedic moments.

"Waisetsu Missile" balances its ecchi elements with a focus on character growth and emotional connections, making it a unique entry in its genre. The series' blend of humor, romance, and science fiction creates a distinctive narrative that appeals to fans of both lighthearted comedy and more nuanced storytelling.