Shio Kuno is a high school freshman who is half human and half alien, having inherited a peculiar biological quirk from his extraterrestrial mother. Whenever he experiences even the slightest arousal or sexual excitement, his body instantly bursts into a sticky, gel-like substance, a phenomenon he calls scattering. Shio has long enjoyed this reaction, especially when it happens around the girls at his old school, but his parents grow concerned about his behavior and secretly enroll him in a strict, all-boys boarding school in the hope of curbing his unusual habits. Forced to leave behind the female classmates who triggered his scattering, Shio arrives at the new school with a defiant attitude and a deep dislike of men. There he meets Souma Minato, the cool, muscular, and dependable class representative who is assigned to be Shio's caretaker and roommate. Almost immediately, Shio finds himself face-planting into Souma's bare chest and, to his own shock, scatters for the first time because of a boy. This moment forces Shio to confront feelings he never expected, and he begins to develop genuine romantic interest in Souma despite his previous aversion to men. Souma, in turn, is unfailingly patient and nonjudgmental, accepting Shio's strange condition without disgust and even calling it beautiful when others have recoiled in fear. As the two grow closer through daily life in the dormitory and school events, Shio struggles with a deep-seated loneliness and trauma from years of being misunderstood and rejected because of his body. He desperately wants to be loved and accepted as he is, but his condition makes physical intimacy nearly impossible, creating a poignant and central conflict. The story follows Shio's journey from a carefree, scatter-happy boy into someone who genuinely wishes he could stop scattering so he can properly connect with Souma. Along the way, the narrative balances slapstick comedy, tender romantic moments, and more emotionally heavy scenes about identity, self-acceptance, and the fear of being seen as a monster. Supporting characters include Shio's blunt but caring uncle Ria, who shares the same alien heritage, and Shio's classmate Ran, whose own potential romance with Ria is touched upon in later volumes. The series builds toward Shio and Souma solidifying their relationship as boyfriends, with Shio learning that even if he can never fully control his body, he can still be loved and love in return through honest communication and trust. The story concludes in its sixth and final volume with a deeply fulfilling and emotionally warm resolution, showing the couple meeting Souma's family, facing the future together, and choosing happiness on their own terms. The manga is presented entirely in full color, with the scattering effects rendered in vibrant, kaleidoscopic imagery that emphasizes both the absurdity and the aching beauty of Shio's condition.