William Colon 
Master Of Infinite Summoning [EPUB ebook] 

Having had half of his soul taken away by the Devil, he had no choice but to become a Devil Surrogate, taking on the profession of Summoner and beginning to travel through the multiverse to serve the Devil.

Su Zhe: 'I heard you offered a prayer to the devil?’ Pathfinder: 'Yes, please fulfill my wish and defeat my arch-enemy!’

With a wave of Su Zhe’s hand, a sea of millions of skeletons, a teenager who drove a Gundam, an ageless witch, a barbarian hero, and Sadako of the Midnight Murderer drowned out his enemies in the blink of an eye.