Three of the members are from girl group IOI.
The release date was also revealed.
Another lawsuit was filed just days after the first one was withdrawn.
Cube Entertainment also released an official statement regarding the news.
The two will star in the second installment of the series, called "Cockroach."
The band's last Korean album was released in early 2015.
Only four members were not included in the group's first ever sub-unit.
The two also uploaded handwritten letters to let fans know the reason behind their decision.
The idols will work in new jobs every episode, experiencing life as a normal person.