Transmigrated as a Vampire

Dying in a tragic event Felix Sapphire gets transferred to a soul realm where he was going to have his memories erased and soul recycled but with a string of luck he was chosen to transfer to a world of monsters and magic with his memories intact, except when he arrives contrary to what he expected he is now a useless weak bat!
Left powerless and hungry Felix had no choice but to eat a dead mouse not knowing this was the start of his evolution into a progenitor of a whole species!

Base of 7 chapter a week.
100 Power Stones = +1 extra chapters per week
200 Power Stones = +2 extra chapters per week
350 Power Stones = +3 extra chapters per week
500 Power Stones = +4 extra chapters per week