GFriend's Yuju has dropped "Falling" for the 'Run On' OST.

In the music video above, Ki Seon Gyum (played by Siwan) and Oh Mi Joo (Shin Se Kyung) slowly become close as they enjoy the growing tender romance between them. "Falling" is a romantic ballad about slowly falling in love, and it serves as the theme song for the two characters' relationship.

Listen to Yuju's "Falling" above, and let us know what you think in the comments below.