Shindo Kiyoshi operates as a highly skilled back-alley doctor, catering exclusively to the underworld's clientele—from corrupt politicians to shady organization members—for the right price. A top medical school graduate, his sole motivation is money, openly declaring no greater liking exists. During consultations, he prioritizes payment over understanding injuries, bluntly asking, "The point is how much can you pay?" Yet, upon securing payment, his professional competence shines; he reassures patients, "Don't worry, you can rest easy now. I’ll have this fixed in no time."

He maintains a pragmatic view of health, rigorously bodybuilding because he believes patients shouldn't be treated by an unhealthy doctor. When questioned about buff women, he deflects, stating, "What’s important isn’t on the outside... It’s money," and favors banana-flavored protein. While generally taciturn and private, Kiyoshi secretly harbors a fondness for cute things, though his pride prevents him from ever admitting it.

Affiliated with the Kujo family, he serves as Soma Kujo’s private doctor and occasionally enters bodybuilding competitions with another family affiliate, Kirishima. His name presents a contrast: "Shindo" meaning "fresh, new" and "hall," while "Kiyoshi" means "clear, pure, clean" and "will, purpose," juxtaposed against his morally flexible profession. He stands 184 cm tall and was born on May 8.