Synopsis

A catgirl escapes from slavery in her fantasy world to the real world and must learn everything from scratch.
Vivian is a catgirl, born in a world in which all beast-kin are considered as nothing more than intelligent animals and are kept as slaves. Her new owner horribly abuses her, but eventually with the help of a friend she manages to escape, and while running for her life she passes through a portal to the real world. There she finds herself trapped in the apartment of a young man who must be a powerful mage, considering all the impressive artifacts he possesses, and who kindly teaches her his language and his world.
This is volume 1, which covers the descent into and escape from abuse. Volume 2 and 3 are available on WebNovel:
https://www.webnovel.com/book/slave-to-reality_21655029406171205
The story is marked as completed because it's completed here, but it continues on WebNovel.