Strongest Sage With The Weakest Crest (Manga) Vol 22

In this manga adaptation of the popular light novel series, one boy will stop at nothing to be the world's strongest...not even putting his life on the dracopulse line! Matty's newly built dracopulse observation station picks up some unusual activity. After analyzing the data, the worst fears are confirmed: an elite demon has appeared and created a monstrous army of abominations. Matty and his team manage to locate the demon and head out to face the newfound threats. The demon proves to be manageable, but the army of abominations simply refuses to die, even when pounded to pieces! What can Matty and his team do against an enemy that can't be slain?! Square Enix Manga
(W) Shinkoshoto (A) Kansho & Hyoko, Huuka Kazabana