UEE looks comfy in hoodies and sweatpants in stills from 'Illumination'

Her character is bright and energetic, but also born in poor circumstances, forcing Se Jin to take on multiple part time jobs in order to support her aunt. It'll be interesting to see how Se Jin goes from such an innocent character to one striving toward power and gain after meeting the elegant Seo Yi Kyung (played by Lee Yo Won). 

'Illumination' premieres this November 21!