The world created by drama remain consistent on rules and possibilities they themselve set on. Story was good , actors character were immersive and behave the same way a normal human being behave under given circumstances. Characters were alive and behaviour were logical and responce were within bound to the characters.
World building - 10/10
Characters chemistry - 10/10
Immersiveness in story 10/10
Overall. -. good

Personal opinion:-

What I find repulsive - love triangle thing .
The female character interaction with second male lead. ( I find annoying)