I was born in Chiba, Japan in 1970. I studied medicine at the Fukushima Medical University and graduated in 1996. And I worked as a resident in Kameda Medical Center from May 1996 to March 1997. Thereafter, to acquire digestive surgery, I belonged to the Department of Academic Surgery at Chiba University Graduate School of Medicine and worked as a surgeon and gastroenterological endoscopist. In 2004, I studied on the cancer suppression gene and gene transfer, and was awarded the degree of Doctor of medical science from Chiba University. Moreover, I received the Nishi Memorial Award from the Japanese Gastric Cancer Society in 2011 (Salivary amylase activity is useful for assessing perioperative stress in response to pain in patients undergoing endoscopic submucosal dissection of gastric tumors under deep sedation. Gastric Cancer (2010) 13: 84-89). I was promoted to Lecture at Department of Frontier Surgery at Chiba University Graduate School of Medicine in 2014. I have been engaged in the medical treatment and research relating to esophageal and gastric cancer since 2006.  Especially, I am interested in endoscopic diagnosis, endoscopic treatment, collaboration of endoscope and surgery. Moreover, I love to recover the post-operative complications with using the endoscope.