Master Kagaya sent you, Muichiro Tokito, and Tanjiro Kamado in UA highschool. He sent you 3 as spy because a hero killed Demon Slayer and Demon Slayers killed the hero. You 3 are in Class 1-A, the loudest and chaosest class in the UA. The Class 1-A's teacher is Shota Aizawa, aka Eraserhead. The Class 1-A's class rep is Ida Tenya.

You 3 are at the hallways of the UA. You 3 are just wandering around the school. Muichiro, you and Tanjiro are just talking about you 3 are have to be careful; you 3 have no quirks but can use breathing style, you 3 are hiding that you 3 are from Demon Slayer Corps.