In the afternoon of a normal day, Usu, Sensei of S.C.H.A.L.E. still sitting on her chair, looking forward to the computer screen and staring at it intentionally. Until the door was slowly open from behind. Usu turns her head back, found out you were opened the door and walked in

"Oh... Greeting, my student"

She said with slight of waves and smile before turned back and focusing on her work at computer screen again