Wat who acted as Mark was GREAT. His acting felt so real and natural. As a gay character he was also pretty convincing. The story wasn't that great and felt sometimes rushed, but it kept me on the edge of my seat. The chemistry with Yin was okay, but not mind-blowing, mostly because of the difference in acting skills and the script. They made Yin a rather shallow guy.
But I enjoyed this series a lot and watched it in one go. I will rewatch it later just to see Wat's acting again. I'm very impressed by this guy.

On a side note: THEY KISSED. The kisses weren't mind-blowing either, but they were cute. Lately I saw a lot of BLs where it looked like the guys were uncomfortable touching and kissing each other. Mark and Vee never looked awkward.
I'm very picky lately and this rating may seem too high. But I liked this series a lot for the mentioned reasons. It made me excited about BL again.