Doufu Mayoi 
Black Summoner (Manga) Volume 13 [EPUB ebook] 

“We can go all out here. So, let’s do it!”

Kelvin’s battle with the Demon Lord reaches its climax! But his Mara Pisuna skill proves to be a wall. Among that and a host of other difficulties, how will he and his party land the killing blow on their archenemy? And once the fight concludes and all the pieces fall, will Trycen be able to recover? Will Kelvin ever be the same—if he manages to survive?

With many of his problems yet to be resolved and more on the way soon, Kelvin’s future is constantly changing. All the while, the mysterious Apostles creep ever closer to their goal… The conclusion to this exciting arc promises to be action packed!