Sean or mostly known as S is a part of 3SH2Y a sub-unit of SNSD  She likes Taeyeon and confessed to her but got rejected because of her age and because Taeyeon just broke up with baekhyun She's still 16 and Taeyeon is 27 Sunny is there for her Sunny likes her  Taeyeon is confused seeing them skinship makes her jealous S is confused taeyeon is clingy to her especially when it's just the two of them Sunny clings to her on and off stage