Complex but not convoluted. The production did good with the progression of the story. Plus, they provided a bit backstory for our main characters.

From the prison which provided mystery and intrigue to our ML's character. ML meeting FL there while she was coping with her guilt over her fathers accident.

From being merely acquaintances/colleagues, to being friends/confidant and then finally falling in love. From almost an unrequited love to a selfless true love.

This show is really entertaining, even secondary characters looks good just like our ML and FL's on screen chemistry.