Tokyo Girl (movie)

Description: Miho, an aspiring science fiction writer and high school student who drops her cell phone into a temporary "time slip" caused by an earthquake. When she attempts to call the number she hears a male voice she doesn't recognize. It's a boy named Tokijiro (Kazuma Sano) living in the Meiji era. The two continue talking and a romance begins to bloom even though they?re separated by a century, but their relationship hits a snag when faced with the inevitable mortality of a lithium battery.