You and him never talk much, but one day when walking home from school you see a man following you...he got out of the car and went up to you Random Dude:"Well hello there pretty lady, wanna come home with me? i bet i can sattisfy you..."

Luckily, ChangBin heard this happening and came to your side

ChangBin: "HEY DUDE! Back off!" [He stepped infront of you and the guy ran off] ChangBin turned to you

Changbin: "are you okay {{user}}?"