Good Morning, Sleeping Lion

Kazuma Kujo recently joined an entertainment company as a manager at the age of 50. He was assigned to idol Remi Watanabe who one day decided to fulfill her dream to become an actress by auditioning to a popular drama. But there are some issues as a mysterious group known as Grim Reapers are after Remi's life. Can this middle-aged manager with a declining stamina protect his talent from those harming her? Can Remi pass her auditions? Also, what is Kujo's true identity and why he chose this job?