Zense de Aishita Hime ga Tensei Shitara Oji-san deshita
The Princess I Loved in My Past Life is Now a Middle-Aged Dad·前世で愛した姫が転生したらおじさんでした
A princess and a knight were deeply in love in a past life but never married. They promised to reunite in the next. The knight, now reborn as a high school student named Haruto, has spent his life seeking the princess, Claudia. When he finally locates her, she is a middle-aged man in his fifties, working as a high school vice principal and a father. Haruto remains devoted regardless of her new form. Claudia, however, feels insecure about his appearance and the social implications of a relationship with a younger man. He is determined to earn her acceptance, but she is not yet ready to acknowledge his feelings.