Backstage at KBS's 'Music Bank', the unni and dongseng groups of SM Entertainment, CSJH - Dana & Sunday and f(x), meet up as they prepared for their respective comeback and farewell stages. Chatting up a storm and taking sel-cas to celebrate the moment, the girls shared the scene backstage with Sports Korea. Check it out below! -- # 'Cuties' together CSJH's Sunday and f(x)'s Krystal pose cutely for the camera, proving that despite the age difference, they're still as cute as ever together. # The aura of the unni group Sunday and Dana are celebrating their first broadcast performance for their comeback in nearly four years. With beautiful, clear skin and a modern new style, they're an unni group who still has the freshness of other rookie girl groups. # The cuteness of the dongseng group The girls of f(x) are concluding promotions for their first official album. Having put both "Pinocchio" and "Hot Summer" at the top, the girls are definitely a formidable force behind their cute looks. # Three different charms and individuality Charismatic Amber, cute Sulli, and chic Krystal pose for the camera in ways that reflects their individuality. # Thorough preparations Dana and Sunday prepare thoroughly for their first live stage. Dana gives a nervous glance as she undergoes a last minute check up, while Sunday shows off her excitement with her bright facial expression. # 'Puffy cheeks' Vic-momma and 'pouting' Amber Victoria responds to Amber's poke on the cheek with a coy look. # Introducing 'Bap' Luna finally introduces her new pet puppy, 'Bap', whom she previously mentioned on TV shows. Perhaps he's not quite awake from his nap yet, as he looks sleepy in Luna's arms, who stares down at him lovingly. # Find the hidden member While Victoria poses with her adorable aegyo, fans are quick to catch the sleeping image of another member behind her. Who is she? Source: Sports Hankooki