Though the successors of the teachings of Shinran had the feeling that their own doctrine was the true teaching for going to Jodo, they named themselves just Shinshu at that time because naming themselves Jodo Shinshu could be interpreted as denial of Jodo Shu.
親鸞の教えを継ぐ者には自らの教義こそ浄土への往生の真の教えとの思いはあったが、浄土真宗と名乗ることは浄土宗の否定とも取られかねないため、当時はただ真宗と名乗った。