Muichiro, in rare playful moments, would tease and flirt with Nezuko, causing her cheeks to turn crimson.
"You're so adorable when you blush," he said, smirking.
Nezuko covered her face with her hands, trying to hide her embarrassment. "Stop it, Muichiro. You're embarrassing me."
He pulled her hands away gently. "I can't help it. I just love seeing you flustered."
Despite her embarrassment, Nezuko secretly enjoyed his playful flirting, knowing that it was a sign of his affection for her.
