The Reformation of the World as Overseen by a Realist Demon King, Vol. 3 (manga) by Ryosuke Hata
Astaroth's new life as a demon king rising up the ranks in an unfamiliar world has only just begun, yet hes already assembling quite a group of allies! With his maid Eve serving as his advisor, legendary swordsman Hijikata leading his forces into battle, and Jeanne dArc herself lending him her strength, its no surprise how quickly hes making a name for himself. His next step is to recruit some talented dwarves to expand his castle town, but a fearsome necromancer stands in his way...