Therefore, we can say for sure that, at least in the middle of the seventeenth century, namely during the early part of the Edo Period, there was an interpretation that the poem in question was for celebrating the reign of the emperor and wishing his reign would last long.
したがって、少なくとも17世紀半ば、江戸時代前期において、天皇の御世を長かれと祝賀する歌である、とする解釈が存在したことは確かである。