The King of Soldiers Retired and Wanted to Live in Peace, but the System Forced Me to Become a Bodyguard

[The cold-faced soldier king is forced to go into business, and the fragile CEO is struggling every step of the way! Gu Beichen, the "ghost" on the battlefield in the past, now just wants to be a complete useless person. However, he was forced to be bound by the "Strongest Bodyguard System", forcing him to regain his edge and become the personal bodyguard of Su Wanqing, the female president with a "troublesome physique".