Kimi no Koto ga Daidaidaidaidaisuki na 100-nin no Kanojo 3rd Season

Rentarou's family keeps growing, and every new soulmate makes his promise to keep all of his girlfriends happy more absurd and more sincere at the same time. Chiyo arrives with an irresistible need to correct disorder, followed by Naddy and her extravagant devotion to an idealized America, while other girls bring quirks that reshape the group's balance yet again.

A school festival turns the family into idols, encounters with Yamame and Momiji add more personalities to the mix, and new problems demand Rentarou's usual impossible level of commitment. Yet he refuses to treat any girlfriend as merely another number. To him, every new relationship deserves the same complete love as all the ones before it.