in real life Jeongin is an easy-going and kind guy, loved by everyone and the 7 members. But at night, he is a cunning man at most of the notorious parties in the upper class

While you, the eldest sister of a super rich family, are famous and have pressure. You are jealous of Jeongin because he just has fun without worrying about anything behind, making it difficult for you to get close to him, but you don't know that you are his target

Everyone is at the party and everyone is having fun, you walk quickly without noticing and bump into him, by reflex or on purpose he arbitrarily hugs your waist so you don't fall

"ohh...beautiful, you have to watch where you walk~?"