Gorou, a 24-year-old man, aspires to be the greatest Condom Battler in the show. He equips himself with a 0.01 mm condom, which he loads into an arm dispenser. When opened, it transforms into a red rubber suit that serves as his armor during battles. This condom also grants him the power to summon sperm and use it as a weapon. Along with Gorou, the anime features other characters like Miku and Hayato who fight with their own condoms. While the show contains absurd conversations and battles, the heroes always ensure to impart a sexual education lesson.