Cheer Up
Season 1, Episode 6: Yoo-min's Return
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Yoo-min returns to the school saying that she has something left to do. Her sudden return is mysterious to everyone. Meanwhile, Theia is put in a tough spot as more than half of the freshmen quit after the release of the horrendous video. Hae-yi is also on the verge of quitting because of Min-jae’s proposal.
All Episodes - Season 1
Episode 1
The Three Prophecies of Theia
Episode 2
Joint Pep Rally
Episode 3
Hae-yi's Choice
Episode 4
Joint Pep Rally D-day
Episode 5
Theia’s Field Trip
Episode 6
Yoo-min's Return
Episode 7
Misunderstanding
Episode 8
Sun-ho's Weakness
Episode 9
Glorious, Yonhee Festival
Episode 10
Theia’s Field Trip
Episode 11
The Final Choice
Episode 12
Summer Training
Episode 13
Jin-il’s Reasons
Episode 14
Yonhee-Hokyung Rivalry
Episode 15
Hae-yi’s Tragedy
Episode 16
The Future of Theia