Magical beings that dwell on the boundary between the mortal realm and other realms.

Murasakino: yokai of the first period

Hitotsume-kozo (unfugl)
Kinoko (arcane shadow)
Kitsune (dream energy)
Mononoke (kor)
Ouni (stagma)
Tanuki (fortune)
Yosei (mana)
Chōchin-obake (poioumenon)

Niji: yokai of the second period

Nurarihyon (lhair)
Tennin (celeste water)
Waira (banaru)
Yobuko (euphony)

Shiroi: yokai of the third period

Akaname (brown aether)
Akuma (razdavit')
Dodomeki (drenante)
Ishinagenjo (ibbissu)
Kamikiri (bedrog)
Keukegen (vile energy)
Mikaribaba (arnum)
Rokurokubi (blasphemy)
Samebito (baleblood)
Umibōzu (fusei)

Midori: yokai of the fourth period

Aosaginohi (lunar aether)
Enenra (lahab al'qalb)
Inugami (nzwara murazvo)
Kawauso (conflueverant)
Raiju (bijalee)
Yama-uba (kazaddarean)
Nando-baba (temporal aether)
Tsurara-onna (hvittdogg)
Shinigami (poarta)

Aka: yokai of the fifth period

Korpokkur (kakraohy)
Yamajijii (shebv heya)
Totetsu (mashoaab)
Tsuchigumo (menab'e)

Kuro: yokai who move between periods

Obake (flux)
Satori (psionic energy)