Kai's duty as a member of the Human Protection Agency is to ensure that the four races from The Great War are kept sealed in their graveyards. Humanity has been at peace for 100 years, until one day a portal opens and the world he's known ceases to exist.
The hero of the spirits, 
Spirit Sovereign Rikugen Kyoko.
بطلة عِرق الأرواح، حاكمة الأرواح
ريكوغين كيوكو
Die Heldin der Geisterwesen:
Kyoko Rikugen, soberana
de los espíritus y su heroína.
Kyoko Rikugen, soberana
de los espíritus y su heroína.
L’héroïne des spectres.
L'eroe degli spiriti,
A heroína dos espíritos, a Soberana
dos Espíritos Rikugen Kyoko.
Герой духов —
วีรบุรุษแห่งเผ่าวิญญาณศักดิ์สิทธิ์