'The Language of Love’ is one of the two movie projects starring the boy band group, Supernova as the leads. In-Ha (Jin Se-Yun) used to be a popular singer. She is now blind and has closed her to mind to the world. Tae-Oh (Sung-Mo) is mute. He works tuning pianos. In-Ha takes a walk every morning. Tae-Oh (Sung-Mo) plays a piano for her when when she passes by.
| Actor | Role |
|---|---|
 Yoon Sung-moTae-o | Tae-o |
 Song Ji-hyukRo-mi | Ro-mi |
 Jin Se-yeonIn-ha | In-ha |
 Shin GuGrandfather | Grandfather |
 Seo Hwa-yiNa-na | Na-na |
 Jung Kyung-hoonAgency Representative | Agency Representative |