1. The business is primarily located in Toshima-ku, Tokyo, Japan, specializing in gastroenterology endoscopy services including gastroscopy and colonoscopy. 2. It operates as a specialized clinic in the health/medical industry, competing with other gastroenterology clinics in Tokyo. 3. The official website brand keywords are 'Otsuka Endoscopy Clinic' or 'Otsuka Gastroenterology'.