This internal medicine clinic is located in Nakata-cho, Naka-ku, Hamamatsu City, Shizuoka Prefecture, and offers English support, parking, and barrier-free facilities. With an annual record of 3,000 endoscopic examinations, the clinic maintains high performance levels with an average colonoscopy insertion time of just 3 minutes and an approximately 60% adenoma detection rate. The clinic offers colonoscopy without oral laxatives, using sedated gastroscopy to inject laxatives directly into the duodenum for colonoscopy preparation. Patients can undergo both gastroscopy and colonoscopy on the same day, requiring only one dietary restriction and one hospital visit, reducing physical and time burdens. Not only gastroscopy but also colonoscopy can be performed on the same day without reservation, and same-day examinations are available by contacting the clinic by 9:30 AM on an empty stomach. When colon polyps are detected during colonoscopy, same-day removal and same-day discharge polyp surgery is performed.