![](https://image.tmdb.org/t/p/w92/moZiUEc02xTy0qI038ZoS9o5szf.jpg)
IU
IU / Eun / Hanna / Ji-eun (4 eps)
![](https://image.tmdb.org/t/p/w92/ceySyYpE7fg9O4nnPMFX3kWSI4k.jpg)
Bae Doona
Doo-na (1 eps)
![](https://image.tmdb.org/t/p/w92/hfejrQ8gjRWCheiKpJANajXT0xi.jpg)
Park Hae-soo
Jung-woo (1 eps)
![](https://image.tmdb.org/t/p/w92/hRzxo4S9OjH7FASagcDGSq6F7pI.jpg)
Shim Dal-gi
Hye-bok (1 eps)
![](https://image.tmdb.org/t/p/w92/nrMoT1tcD8gloMUihaHUzMU72sf.jpg)
Jung Jun-won
K (1 eps)
![](https://image.tmdb.org/t/p/w92/8mTd6HpLDFK2cwiWhoyZO78A5n1.jpg)
Kim Tae-hun
Father (1 eps)
![](https://image.tmdb.org/t/p/w92/erpOUfjadjH2duXd6XWDsa2kNfw.jpg)
Lee Seong-wook
Jung-geun (1 eps)
![](https://image.tmdb.org/t/p/w92/kp4j5Z4JCluQ5NgdqBHs7mRh1E3.jpg)
Pierce Conran
IU's boyfriend (1 eps)