It looks like rookie boy group ONF has kicked off teasing for their summer comeback!

On August 20, the boy group revealed a set of photos showing a piece of paper resembling a receipt at first glance. Simply labeled "Signal clue #1", the receipt shows a series of printed words and times on the front, followed by scribbles on the backside titled "Counter production". 

Stay tuned for more updates on ONF's first comeback in approximately 7 months!