On June 11, boy group Sparkling made a guest appearance on KBS2's 'Yoo Hee Yeol's Sketchbook'!

On this day, the energetic quartet performed their comeback song "Diamond", and also met up with another trending K-Pop group, Mad Monster! During their interview segment, MC Yoo Hee Yeol asked Sparkling, "Who do you consider your rival?"

Sparkling's Yoojin replied, "Even though I've never thought of them as our rivals, there is a group that debuted around the same time as us, called ATEEZ. We find them very cool, and we watch fancam videos of them a lot. We watch fancam videos of ATEEZ members Yunho, Seonghwa, and San the most. Lately, ATEEZ's 'The Real' is really cool."

Next, Sparkling members Yoojin, Minsu, and Seyoung got up to do a short dance cover of ATEEZ's "The Real"! After watching Sparkling's cover dance, MC Yoo Hee Yeol commented, "You dance it better than ATEEZ!"

Also catch Sparkling's Hyunoh sing a cover of Toy's "That I Was Once By Your Side" below!