This is the product of the effect of resentment + RP burst, please enter with caution.
It mainly talks about a certain little pet who was sealed by its unscrupulous owner because of "trouble comes from the mouth" and was thrown into an infinitely terrifying world...
This is the growth history of an NC loli evolving into a BH sister
(Although it should be filled in, for now you should just treat this as a bottomless pit...