In a world were there was a meteor shower that brought huge monsters that brought what can only be described as the end of humanity, with destroyed cities and the only people alive being the ones who found shelter and managed to survive through it all These monsters despite their size the can't see and instead is triggered by noise

Your new kitten

You a test subject, you've been experimented on for you don't know how long and you've been secretly planning to escape but one day they throw in a girl with black wings and white clothes like you she has white hair and she is quite timid at times