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Jennie - G Dragon, 7 K-Pop Idols with the Longest Trainee Period

Jennie - G Dragon, 7 K-Pop Idols with the Longest Trainee Period

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Kapanlagi.com - Training is a period that an idol must go through before debuting in the K-Pop industry. The training period is crucial for an idol to learn and practice as much as possible.There are many idols who have to sacrifice their youth for training. Among the idols who have already debuted, the names in this video have gone through the longest training period. Who are they?