Twin sisters Choa and Way, from colorful K-pop female group Crayon Pop, surprised fans with the release of a new song.

On Jan. 12, Choa (Heo Min Jin) and Way (Heo Min Seon) dropped a new duet titled "I Hate You."  The song shows a different side of the identical twin sisters compared to their usually bubbly and cute personality.

Fans have commented with positive and encouraging words for the 25-year-old sisters.

"Amazing. They did it very well. I love them, they have been working hard, they have good voice, it sounds great. Good job," wrote YouTube viewer ChoaWayfans1.

Choa and Way, who are also known as the project duo Strawberry Milk, first branched out from Crayon Pop's usual promotions in October 2014 with a self-titled EP and the single titled "OK." 

Meanwhile, the Crayon Pop members are also working on their comeback album, which industry insiders have indicated will be released during the first half of 2016.