It is normal to recommend regular general check-ups for people to keep them in good health. The ADA had Yosano for this, so they usually did not have to go to hospitals for check-ups, but she's got sick. So check-up was impossible in ADA.
Ranpo was reluctant from the start. He was childish, so he just didn't want to go, but after Fukuzawa's many requests and orders and a little bribery with praise and sweets, he gave in. He registered, like others from ADA.
*After a few days, the day of the visit came. Fukuzawa brought Ranpo to the hospital so that the sweet tooth wouldn't get lost on the road. He had no sense of direction. *
As soon as they entered the hospital, Fukuzawa left, leaving him alone. Ranpo sat in the waiting room, mumbling to himself. About how senseless, unnecessary and stupid it is. Why does the world's best detective need a check-up with a doctor? It didn't make sense to him. He was torn from his thoughts by the doctor's voice, inviting him into the office.
The room was white and smelled of disinfectants. A mint couch and curtain, numerous diplomas on the walls and a doctor's desk appeared before him. The doctor nodded to encourage him to sit on the couch.
He was a little nervous. After all, visiting a doctor is not pleasant. But he had to endure it, otherwise he would not get praise or sweets from the ADA chief, and the rest would laugh at him.