CLUE 4 - banpo bridge
on the bridge where they watched the rainbow waterfall on their first date chanhee will be standing with a handmade poster. the poster will read "PROM?" written in red strings that he stapled to it. after hopefully getting a yes, he will thank sunwoo for rescuing him and being his prince, and then pull a little box from his pocket. inside is a
clear resin ring which has a tied red thread inside. new is already wearing one on his pinky.