Whiskers of Time (book 1 in the "Books of Unknown Worlds" (Long Hiatus)

Tsu, a 10 year old mouse, has managed to build a time machine, but ended up being dragged into saving the world with a cat named Willow and Kendra, the unicorn, from the evil Dragon King.

Please no hate. Don't like, don't read. Has the word frick but that should be it!