Don't Call Me Sister

After his mother remarries, the sensitive and introverted Su Tang stays with the Ai family, where he befriends the cold and sharp-tongued school beauty Ai Xian, the charming and perceptive older sister Lin Yi, and the呆萌 art-obsessed Bai Lu. Through hilarious clashes and facing storms together, he sheds his timidity and grows into a responsible young man. However, the appearance of a mysterious assassin reveals the secret of his biological father surviving for eighteen years. To protect his sisters, Su Tang bravely embarks on an unknown adventure.