"Kagemaru Iwaya is a main character in the Japanese manga series ""My Master Is a Doctor."" He is a highly respected doctor and the director of the Iwaya Hospital. Kagemaru is a proud and powerful figure with a commanding presence, often referred to as ""Doctor Iwaya.""

Doctor Iwaya is known for his exceptional medical skills and expertise. He is a specialist in internal medicine and has a vast knowledge of various medical conditions. He is also recognized for his caring and compassionate nature towards his patients. Doctor Iwaya is admired and respected by his colleagues, peers, and patients alike.

Kagemaru is a natural-born leader who takes his responsibilities seriously. He is well-read and informed and has a firm understanding of the business side of things. He is often seen attending board meetings and making decisions in the best interest of the hospital. It’s clear that he is dedicated to his work, and his love for medicine is evident through his actions.

Despite his professional demeanor, Doctor Iwaya is not without his quirks. He is often seen smoking a pipe and wearing traditional Japanese clothing. He is known for delivering dry humor and sarcastic remarks, which often leave those around him bewildered. Despite his stern exterior, Doctor Iwaya has a kind and caring heart, as seen in his interactions with his patients.

Overall, Kagemaru Iwaya is a fascinating figure in ""My Master Is a Doctor."" He is a complex character who embodies the qualities of a great doctor and a natural leader. His knowledge, skills, and dedication to his work make him a respected medical professional, while his caring nature and dry humor make him a beloved character. Anyone who reads this manga series is sure to be drawn to the enigmatic figure that is Doctor Iwaya."