Successfully wrapping up the recording session which was held from September 29 to October 1, mentor Rain poured out his passion and sweat for the first mission thinking about his hoobae�idols for an entire week.

SEE ALSO: Rain raises fans' curiosity as he teases upcoming announcement of some 'good news'

It was revealed that Rain carefully looked after the junior idols, reviewing choreography moves together, and instructing them on set.

He also monitored the progress onscreen while holding discussions with the show's director.

The highly-anticipated first teaser is set to launch on October 11.