World Customize Creator

World Customize Creator (ワールド・カスタマイズ・クリエーター) is a light novel series written by Hero Tennki and illustrated by Kyouka Hatori. It is complete in five volumes.

The novel series was adapted into a manga series by Hijikata Yuu and published by AlphaPolis Web Manga starting December 2013.

Plot
Tagami Yuusuke, led by a mysterious voice, is summoned to another world, "Caltsio." He was just a young, video-game lover, but Fate decided to make him become the "Evil God of Calamity" of this world, obtaining the ability to create and customize everything.