I Wanna Be A Catgirl When I Fight The 100th Demon Lord

The God of Evil and Destruction, Dommon has summoned a hundred Demon Lords across a hundred worlds... The gods of light and order banded together, hoping to find a hundred heroes to face this threat. They only found one. And he's had to reincarnate each and every new time he's faced a Demon Lord. Then there's the fact that Galatea, the goddess of reincarnation kept giving him the 'default' settings in character generation for each world! Finally given a choice to be whatever he wants when he faces the last obstacle in his path to freedom from this destiny... He chooses to be... (This is my first attempt at writing something serious in a long, long, time. Comments and critiques are highly welcomed and encouraged!)