As all the schools of Kamakura New Buddhism had some relationship with the Tendai sect (among the founders of the above six sects, the five practiced at Enryaku-ji Temple and the rest Ippen practiced at the branch temple Keikyo-ji Temple as well), the Shingon-ritsu sect belonged to new Buddhism practically, although it originated from the Shingon sect and the Ritsu sect (Nanto Bukkyo).
そして鎌倉新仏教とされる諸派が天台宗と何らかのつながりがあった（上記6宗開祖のうち、5人は延暦寺、残る一遍も末寺の継教寺で修行した）ように、真言律宗は真言宗と律宗（南都仏教）に基礎を置きながらも実態は新仏教そのものである。