At the pre-bad guy stage, Song Joong Ki turned into an innocent and nerdy medical school student for KBS’ upcoming drama Nice Guy.

The recent photo stills revealed the young actor rolling around in the grass while trying to get into his ‘Essentials of Surgery’ textbook. In between filming, Song Joong Ki played around with a portable fan, trying to cool himself down in the heat.

This adorable image of Song Joong Ki will eventually change as the love of his life betrays him and he transforms into a pessimistic bad guy, who uses a different girl to get revenge.

A drama staff member stated, “It’s good to anticipate Song Joong Ki’s radical change from being study bug medical student to a bad man after revenge.”

Nice Guy will premiere in September after the conclusion of Bridal Mask.

Photo Credit: KBS