Cheated Heart (Highschool DxD)

Issei Hyoudou awakened with the reality of the world he lived in, being broken by his master and girlfriend he wanted to kill her, but with his unpredictable emotions he realised the true potential of his own soul.

He had reached power far beyond the walls of his own story, he reached a new realm of power, now his considered a "Author" Level being, and aware of his own fate, that it was all written by somebody, so he reached, and reached far into the void and in the end, he gained control to his own story.