12 episodes
First episode: E1

Ji Su takes the first vacation in high school. In the summer class, she told Mi ji secrets that can't be shared with friends from her school. After a hot summer, there was a transfer student in Ji Su's class. It was Mi ji who knows her secrets. This brings big and small events to Jisu and her friends.
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12 episodes
First episode: E1Quick answers about this series, release status, and episode totals.
The Guilty Secret first aired on September 8, 2019.
The Guilty Secret currently has 1 season and 12 episodes.
The Guilty Secret is ended, and no upcoming episode is currently scheduled.