The Bodyguards(4号警備)

Former police officer Asahina is a light-hearted young man who works for a security company. One day, he is appointed as a bodyguard and teams up with middle-aged Ishimaru. Ishimaru is a former company president who was labeled as coward due to his cautious personality. Despite having differences, they work together to protect their clients and come face-to-face with their past.