Private Detective, I Become Stronger After Being Bitten by an Animal

The protagonist is reborn in a place similar to Earth, where he obtains a system where after being bitten by an animal, he can acquire the animal's abilities. This made him ecstatic. He could take off directly and fly to Lu City, slowly accumulating his own energy. Create your own world! ……………… All kinds of dangerous places, all kinds of strange things, Western vampires? Werewolf? Monk? Under my ability, it's nothing. See how I get around this city! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.