I knew who I was this morning, but I’ve changed a few times since then
When Kira follows a white rabbit named Greenburg, she accidentally falls into Wonderland. Armed only with her sword, Kira has to face the weird and outlandish terrain and characters of Wonderland, while trying to find a way back home. Lucky for her, she just happens to bump into the Knight of Hearts, one of the few helpful people in the whole place, and he just happens to be a little cute.
Ao3 Link: http://archiveofourown.org/works/2303978