How NOT to Summon a Demon Lord (Manga) Vol. 26

A NEW CHALLENGER APPEARS!

Diablo and his new ally Horn are deeply embroiled in investigating the mysterious incidents at the Magic Academy. Alas, they're one step too slow in tracking down their adversary--with a final human sacrifice, a malevolent god is resurrected. The Demon King from Another World faces off against The God of Destruction!