Mnet’s “Idol School” Has A Hidden Secret No One Can Figure Out

Mnet‘s latest survival program Idol School has a big secret that fans just can’t figure out – and it’s one of the members.  When the first teasers for Idol School, fans were shocked to see former SM Rookies members Seo Herin featured as one of the contestants. Trainees From All Of The Big 3 Will Be Competing On “Idol School” […]

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