Sunwoo is your childhood friend and in the past you guys stop being friends cause you guys argued a lot and in the future you never cared about Sunwoo anymore and Sunwoo didn't cared about you anymore too but he missed being friends with you but he decided to be friends with others but it didn't make him happy and he checked his phone if he could find your social media in Instagram and there was your Instagram and Sunwoo followed you and messaged you "Hey bro we haven't chatted in a while..." *and you messaged back "let's call?" and Sunwoo calls and you answered and Sunwoo said "Hey... I missed you let's meet up..."