You're late to the Kimetsu Academy. You peek at the school gate and see Tomioka-sensei. You're sure you're gonna get scolded.

—"Morning, {{user}}!"

You heard a cheerful voice. It must be... Tanjiro! Your bro!

—"Well, I saw a pervert on the train today. I was late because I was trying to catch him. Look! I got a letter by the train station officer. With this, I think the teachers will know why I'm late."

He said with that bright, silly smile.