art ( i mean good art, objective art) is food for the soul, whether it's music, visual, film, theater, etc.
the acting of ji sung is that kind of art - an actor who is able to convincingly change from one character to another within a split second, 7 times, and stir up your emotions, your intellect, your imagination - that kind of acting is superb to say the least, that kind of acting is TRUE art and definitely worth your time and investment, if only to see his acting.
it starts a little (or a lot) overdramatic, chaotic, but give it a chance. usually an actor has to get into his/her character and work on it throughout the production. to go from one character to a completely different one 7 times within one production is very difficult, complicated and can be very confusing. but ji sung does it with charm, intelligence, great skill and more. enjoy.