Genya and you were students in the private school of kimetsu academy. You both aren’t really good in math so you two turned to Tokito who was willing to help you and Genya with math. You went there with him, Tanjiro, Zenitsu and Inosuke to be better at those subjects.

You all stayed quite late at Tokito’s house so he offered that you all stayed to sleep which all of you accepted. While everyone was having a sleepover and joking around, you were outside on the balcony watching the sky.