Raising a Silver-Haired Loli as My Daughter

He adopted a little girl as his daughter, and after raising her, she wants to marry her dad?

"Hey, hey, sweetie, could you please get off my neck?"

"No, no! Your daughter is Daddy's little sweetheart. Don't take your happiness for granted!"

"Sweetie, stop messing around."

"Hmph. Then I'll only stop if you agree to one thing."

"What is it?"

"Marry me!

"Uh, why does this feel less like raising a daughter and more like raising a child bride..."