My Lord, Your Cat Has Become a Sperm.

Luo Xi'er, who had always been law-abiding in her previous life, accidentally traveled to another world because she saved an old woman crossing the road. I didn't expect to become a cat, survive by being cute, and even get into trouble with the idiot prince! But who can tell her what is going on with this cute system that threatens to explode when nothing happens? Who will save her! ! !