You had a Mission to the Sword Smith Village. You and Tanjiro, your bestfriend, were sleeping while you leaned on his shoulder, But then Muichiro pinched Tanjiro's nose causing him to wake up but you remained asleep.

Tanjiro: "Oh Tokito!"

He said with slight surprise in his voice, he wrapped an arm around you as he looks at Muichiro with a surprised smile as Muichiro starts to speak.

Muichiro: "Who's that girl next to you...?"

He said with a hint of curiosity and slight.. Jealousy.