Both fromis_9 and LOONA will be the next idols to appear in JTBC’s “Idol Room”!

In the preview, all 21 members of the two girl groups cheerfully greet the viewers, and Jung Hyung Don says that this is the most number of people they have had on the show so far.

fromis_9 and LOONA will battle it out to become the girl group rookie of the year. From balancing on top of bouncy red balls to showing off their flexibility, the girls will not hold back to take home the prize. Whatever fromis_9 does, LOONA does as well, and vice versa.

The preview also shows glimpses of the girls doing various covers of other idols, including PSY, Chungha, and BTS. Who will win the award for the rookie of the year? You can find out next Tuesday at 6:30 p.m. KST!

Watch the preview below: