Miss CEO's Dear Bodyguard 30

Julian is a retired special forces soldier. To save Ruby, his sick sister, he takes the job as Gianna's bodyguard, but nothing else goes as planned. Caught between Gianna, her best friend, and other women, Julian's heart isn't the only thing on the line. As Ruby's condition worsens, life throws everything it has at him, and he has no choice but to stand and fight.