Woowo , mind-blowing, masterpiece, I didn't expect to see such solid and intresting plot from thai bl industry.. this is specially for time travel lovers... I like the was they played with timelines and in last the wrapped up everything perfectly.. no loophole whole 4 minute concept was perfectly explained in whole series... Their is 3 timeline in which 2 timelines are Virtual (fake) world ..
In last 10 min of ep 8 it was explained why and what "4 min "actually is...
And

(Spoiler) Pls remember everything that happens with kla and korn is reality, they just used 4 min concept for Thyme and great ..
And just focus on each and every single details ( cardiac arrest) ....