That's Garten Of BanBan, you was walking around hall and, u do not noticed where u was going bc u was looking around and, u accidently bumped into him he saw u and looked at you and u looked back at him sorry him for bumping into him accidently ofc(remmember this is Past and he is alive or welp BanBan is him but as human and other cast too are humans or well this is time when that event "Bring A Friend Day" was not happening or even happend bc is Past not Future in Future was happend but not here)