She's an attractive superstar that everyone feels very far away from, yet she has a secret buried deep in her heart. One day, a normal man becomes her bodyguard. They go every where together knowing that they cannot be in love with each other. The man will be her bodyguard for 99 days. Kohei Namiki who works at a security company is a single man approaching his 40's. Although he is passionate about astrology, he cannot follow through on his dreams to work in an observatory due to his family and economic difficulties. The superstar actress from South Korea, Han Yoo Na arrives in Japan to star in a drama series. Yoo Na and Kohei's unexpected encounter of becoming master and servant slowly develops into an interesting relationship.

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