The Shinryūji Naga is a fictional American football team from the Kantō region of Japan in the manga/anime series Eyeshield 21 by Riichiro Inagaki and Yusuke Murata. Based out of Kanagawa, this team based on Eastern myths and legends are considered one of the best teams in Japan, primarily due to recruiting and holding some of the most unnatural talents in the sport.

Source: Wikipedia