- Created By
Han Sang-imKim Jong-seonSeo Won-tae
- First Aired on
Oct 27, 2017
- Popularity: 21.9733
- 38 votes
- Networks
- (KR)
- Production
Hidden Sequence (KR)
- Status: Ended
Show Ended
2 seaons till Nov 27, 2018
Last episode: Episode 32
Seasons & episodes
Total 2 seasons, 54 episodes

Season 1
For a teen, the discovery of an app on her phone that enacts revenge on anyone whose name she writes could mean the end of her days as a pushover.
Aired
22 Episodes
Episode 1Episode 115 min
Overview not available
Episode 2Episode 215 min
Overview not available
Episode 3Episode 315 min
Overview not available
Episode 4Episode 415 min
Overview not available
Episode 5Episode 515 min
Overview not available