Half human and half alien, Shio Kuno’s body has a rather interesting quirk—anytime he finds himself even slightly aroused, he bursts into goo! Concerned over how he delights in gooping his female classmates, his parents secretly enroll him in an all-boys boarding school in the hope of curbing his bad behavior. But things don’t go as planned at the new school, and when Shio face-plants into the bare chest of his dreamy class rep, he unexpectedly goops him too!