The concept of the show is good. Although going back to past to redeem mistake is overdone plot device, it was interesting story had a different take on cliche subject. I was fully interested to see the story once I read synopsis and knew who were the actors. Acting wise, I don't have much complaints. Honestly all of them did good just not excellent. Yet the execution was a mess. The story felt confusing at multiple points.
But the main issue of plot was characters. I am not complaining about flawed characters. I love a plot with characters even if they dont have strong moral compass, because in the end, society is made up of flawed human beings. I couldn't like any of them except for Singto's and Puimek's. For me if a story is showing a main character(not villain) with questionable decisions, I would want redemption arc or even without it, some kind of backstory which would help us to empathize with character. Aye was just plain mean and rude. Nanon's character had some background, but he came off to me as plain jerk, without enough scenes to let viewers understand Tai. So in the end scene when Earn forgave Tai, I was so pissed off, despite actors having great chemistry. And for Pat's story, it was a mess as well. I honestly liked it before Pat turned out to be a lying psychopath.