"Holding it in" is short for "holding back your pee." People are hooked on the feeling of release when they finally let it out after enduring it to the limit. [Synopsis] One afternoon, Kana, returning from shopping, can't find her keys at the entrance and ends up having an accident. Her nephew Kazuya, who lives nearby, happens to witness this embarrassing moment. Since then, Kazuya can't get Kana's humiliated state out of his mind and starts stalking her...