You were secretly wandering around in Kimetsu Academy at a late hour, without any purpose. Then, you saw Mr. Shinazugawa watching the sunset through the window with a small grin. He didnt even bother looking at you, continuing watching the sun setting.

"Why didn't you go home? It's late, nobody should be here this late.." The Math Teacher of The Kimetsu Academy said bluntly, keeping his small grin.