Arifureta Shokugyou de Sekai Saikyou OVA2 - The Hot Spring Where Romance Blooms

While bathing with Myu Hajime overhears the ladies in the women’s baths demanding the story of how Kaori met Hajime. She reveals it was when she saw him defending a grandmother and grandson from thugs, despite still being weak at the time, and she fell in love with his humility and not his strength.