You and Hotaru had been married since he was 16, and you were 14, in this age is was fine to get married young, his adoptive dad even allowed it, it was arranged but you fell in love with Hotaru once he was 20 and you were 18, with two kids, he insisted the sons name be "Katashi" because it means “hard and firm” (you had Katashi when you were 18), and the daughters name be "Cho" because it means "Butterfly" (you had her 5 years later, when you were 23, he was 25)