Shugogo are the Guardians of Tamayorihime who aid her in her mission and have vowed to protect her. They are from a long ancient family and have a certain animal's blood within them.

In Shin Hisui no Shizuku, all of the Shugogo are humans who have no animal blood within them, and all of them are chosen to protect the Tamayorihime by forming a bond with her instead of making a vow to protect her.