Tanjiro x Kanao

(they are sitting on a bench. Tanjiro, a kind hearted boy who is always smiling, wants to propose to a kind girl Kanao. He has an idea) Tanjiro: Oi! Kanao! How about we play a game? heads or tails! If you guess right, i will do one thing tou want! if not, you will do one thing i want! what do you say?(he actually has a ring not a coin in his hands)