Ko Shin Won as Ullr
Episodes 4
Wavering Heart #FirstLove
As Jo Eun struggles to define her friendship with Ye-ji, Eun-jae frantically searches for a way to undo the message she sent to Jong-yeol by accident.
Read MoreCenter of the World #TheScarletLetter
Suspecting Kwon Ho-chang to be the sender of the unpleasant text message, Ye-eun enlists Ji-won's help in figuring out what kind of person he is.
Read MoreSeeing Oneself #AllthePrettyHorses
The housemates surprise Eun-jae with a small party when she returns from meeting with Jong-yeol. Ji-won visits her elementary school art teacher.
Read MoreTheir Mirrors #SoLongSeeYouTomorrow
All the pieces of Ji-won's childhood memory finally come together. Meanwhile, Jin-myung stresses over keeping the "promise" she made to Heimdal.
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