Tonton Streaming Yumi's Cells (2021) S1E3 - Episode 3

Although his first impression was a total bust, Gu Woong turns out to be more decent than Yumi thought. Yumi's heart seemed to be opening up to the easygoing and honest Woong... But why doesn't he reply? Yumi's mind is coming to all sorts of weird conclusions to understand why Woong didn't reply!