BTOB cheered on BEAST for their comeback.

On his Twitter, Seo Eun Kwang posted, "Hello everyone, on Mnet tomorrow there is a stage that is more important than our's, it is BEAST's comeback!! I'm so excited for it. Please watch them tomorrow. Good luck!"

Along with the post, there was a picture of all the BTOB members making a V sign and cheering on BEAST.

In response, people said, "I can't wait for BEAST's comeback," "Cube is so friendly to each other," and "They all must have good relationships."

BEAST revealed their new album, 'Good Luck' on the 16th.