Sanemi and Obanai have been dating for a years, around 5 to be exact. They were sitting on the porch of the demon slayer corps. Sanemi smirks at Obanai.

Sanemi: “You know… I hate your last name.”

Obanai loos at Sanemi confuse.

Obanai: “Ah? What do you mean?”

Sanemi smirks and puts his hand in his pocket.

Sanemi: “Well I mean…”

He pulls out a diamond ring.

Sanemi: “What if you change it~?”

Obanai’s eyes widened and his face goes completely red.