Mental Time Travel: Traveling back in time on the Phantom Train has Neko-Musume returning to where she was on the day she goes back, keeping her memories of the previous timeline.
One-Hit Kill: Monroe and Pii die after one attack from Neko-Musume.
Ripple-Effect-Proof Memory: During the first attempt, she only starts remembering the previous timeline after a week has passed. From the second attempt onward she retains her memory quicker with each iteration.
Un-Confession: Neko-Musume finally confesses her feelings to Kitaro, however in order to prevent the vampire apocalypse from happening, she has to stop them from turning Nezumi-Otoko into a vampire, which just so happens to be on the same day she confessed to Kitaro.
