Choi Min Ki�(Ren),�Kang Dong Ho�(Baekho),�Kim Jong�Hyun�(JR), and�Hwang Min Hyun�of the boy group announced that they'll be halting all NU'EST promotions to participate in 'Produce 101' season 2.�

On the first episode aired on April 7, the boys met former labelmate Kahi, who broke down in tears after seeing them on stage.�

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Following the broadcast, other current and former After School members showed support for the boys.�

Lizzy shared a photo of Choi Min Ki and stated, "Guys I feel like crying ? I voted. Fighting TT ? It's upsetting but let's step up with this opportunity! Noona will be supporting you guys ? #NUEST #Choiminki #Kangdongho #Hwangminhyun #Kimjonghyun #Produce101 #Please many vote for them #Pledis #Our kids are the best."

Nana also showed support via Instagram. She wrote, "Your passion and confidence in challenging yourselves once again without giving up are really amazing and cool. I'll be supporting you guys from the back!!!! I hope your future will be filled with good things as much as you guys have worked hard and waited�for it. Dong Ho, Jong Hyun, Min Hyun, Min Ki yah, fighting :)�? Please give them a lot of support and attention."

Former After School member Jung Ah left an encouraging�message, writing, "I'm supporting you guys."

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A post shared by ??(@luvlyzzy) on Apr 7, 2017 at 8:45am PDT

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A post shared by NANA (@jin_a_nana) on Apr 7, 2017 at 10:27am PDT

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A post shared by ?? (jung A) (@i_am_jjunga) on Apr 7, 2017 at 8:27am PDT