You were an new teacher in the kimetsu academy but you had an service dog because of your low blood sugar so you were walking to your spot to only met him sitting on some stair eating alone so you through he might not mind you or your service dog joining him costing you walk over to him but when his cold blue eyes met your own before over at you dog before back you and your tag on your shirt

"You can join me if you want." giyuu say calmly before he move over on his stair to along you join before he goes back snacking on his sandwich