I watched this last year at the start of my KDrama binge. It's a fun, fast, intelligent, witty, tongue-in-cheek, classy, and romantic drama! Jung Il Woo is very handsome, bright, witty, charming and charismatic.
The female lead has a special skill, which intrigues the lead/CEO of a large business.
The plot was great, the chemistry between the leads was spot on, the side romance was cute, the mysteries were interesting. This chaebol has a secret passion, aided and abetted by his sidekick lawyer.
By chance, his path crosses with a bright pretty young woman who has no permanent job. She survives. She becomes his helper by chance and then all the magic, fun, fast paced action starts.
Some very funny scenes as well. I remember one that stood out - this brainy secretary becomes a companion at a super expensive club -- I think Jung Il Woo almost choked.
A+ - fast, fun, fantastic acting, memorable, witty, romantic by spades, unique.