Strongest Sage With The Weakest Crest (Manga) Vol 08

Former Strongest Sage Matthias's fight to protect mankind continues, with the demons launching all manner of attacks to destroy everyone with knowledge of their plot to weaken humanity through misinformation about magic! Now the demons are out to manipulate the Dracopulse Lines-channels of hidden magical power flowing deep underground-for their wicked schemes, and Matthias is on to them! No doubt, this will prove to be yet another tale to add to Matty's new legend! Square Enix Manga
(W) Shinkoshoto (A) Kansho & Hyoko, Huuka Kazabana