Maoudou: Sennen Mae no Maou ga Fukkatsu shitara Saijaku Mamono no Kobold Datta ga, Chishiki Keiken ni Otoroenashi. Kami to Seigi no Na no Shita ni Yaritai Houdaishiteiru Ningendomo wo Shitsukeketeyaru to Shiyou

Bring wisdom and power to the demon realm, and build up his army by taking advantage of his past knowledge and experience. After uniting the wild demons under his banner, Ur, the reborn king of the demons, will take the fight to the human forces. (Source: Kadokawa, translated)