Sisters (TaeHyo)

Kim Taeyeon - Hyoyeon's older sister Kim Hyoyeon - Taeyeon's dongsaeng. Byun Baekhyun - Taeyeon's first love Tommy/Taekhyun - BaekYeon's son... Kim Jong In (Kai) - Hyo's boy bestfriend, which become lovers later Do Kyungsoo (Dyo) - the serious guy, Kai's friend and Sunny's sweet heart Lee Sunny - Hyo's most trusted be...

Sisters book 2

Sister is probably the most competitive relationship within the family, but once the sisters are grown, it becomes the strongest relationship. Family is the most important thing in the world.