You're my wife, don't doubt it!

"Wife, even if you weren't so beautiful, rich, smart, gentle, or good at fighting, I would still love you just the same."
"Well, I know."
"Because you are the wife that God has destined for me, loving you is my duty."
"No, it's because I'm unlucky enough to have you in my life, and no one else will date you."
"...I don't think so."
Standard version introduction ↓↓↓
A boy who has never been in a relationship meets his daughter from 30 years in the future.
"My little darling, tell me quickly, who is your mother?"
TAG: Battleground, No System, Has Dungeons