Shidinn, or Xdi8, is a constructed language, and it has nothing to do with the Nishiki content. See Group:にしき的フォントの外字 for Nishiki content.

Shidinn is currently part of the USCUR. The characters are located at uf1b00-uf1c3f.

Note

Shidinn has uppercase, lowercase and middle case letters. It also has digits and ideographs.

See Shidinn on the KreativeKorp page for full info.