High School of DxD: A world without God

The story is about a brave soul who asked for 3 ultimate wish which should have been Taboo but he was lucky because there is a world where his wish could work and help the world itself. so his wishes were approved by the world. This is how our mc started his adventure in a world full of dangers but not for himself but others. Anyway, read how he reaches the top of the world or in his... back<<