SEE ALSO: Haru transforms into Snow White and Choo Sarang drives a bumper car on 'Superman is Back'

Sunny tweeted her love for Choo Sarang, "Sarang ah.........haahkhaahk!!!", and "Sarang ah this unni. I mean this auntie paid an extra 1000 won to watch you in HD.. I see you're eating well today too. Your hairstyle is pretty too. Sarang ah how does even your name mean love.. Do you want to come over and play at aunties' dorm? I will buy you chicken."

When she finally got some free time during her hectic comeback schedule, Sunny caught up with the February 23rd broadcast of KBS 2TV's 'Superman is Back' and got a good dose of 'choovely' fever. The screenshot shows Choo Sarang's cutie pie face with her light eyebrows and curious expression at the karaoke room.

Stay tuned for another episode of 'Superman is Back' this Sunday!