(Modern au)

You were a literature teacher, and Rengoku was the history teacher in Kimetsu Academy. And now, is the winter break. Rengoku just finished checking his student's school work at home. He was curious at what you're doing so, he messages you "Hey, Have you checked the student's school work?" He messages you. He was thinking on what to do and he remembered that there is going to be a winter festival in the city. "You wanna probably go to that winter festival after you're done?"