Who was the man in the Moon Hotel in his last life?

I was a bodyguard in my last life. Druna Hotel is a romantic fantasy drama, directed by Wu Qinghuan, written by Jeong-eun Hong and Mi-ran Hong, starring IU and Yang Zhenguo. The Druna Hotel tells the story of an elite hotel manager who runs the Druna Hotel with a beautiful but lonely boss because of a fateful event. The man was a bodyguard in his last life. Bodyguards purposefully lurk in the Moongazing Gang, gain the trust and love of Moongazing, and fall in love unconsciously. Full Moon trusts the gang that cheated Full Moon and wiped out her childhood sweetheart Yan Yu. After achieving the goal, the escort has enough merits to marry the princess. The full moon knew that she had been cheated, put on a wedding dress and killed the wedding princess, which is also the reason why the fifth episode was full of blood and wore an inappropriate wedding dress.