Kagami no Oboegaki is a study of ancient Japanese literature by Kimiyuki Inukai. Using mirrors as objects and symbols, it reads the relation between ancient literary language, belief, and ritual.

Through the symbol of the mirror, the work considers language and belief in ancient literature.

The Position of Okura's Poems Seen from Six Dynasties Buddhism is a study by Shigemi Azuma. It reconsiders Yamanoue no Okura's poetry in relation to Six Dynasties Buddhist thought and expression, exploring the intellectual background of ancient Japanese verse.

Okura's poems are reread through the sphere of Six Dynasties Buddhism.