Mobomoga

A boy's ordinary life is shattered when a girl on a bicycle runs him over. She is not from his time, however, but from the Taisho era, and she carries a mysterious "rental watch" that can steal people's time to travel back in time. The boy's life is turned upside down as he gets caught up in her world.

Now, the girl must navigate a future filled with smartphones, Shinkansen, and mini skirts—a world completely alien to her. As the boy tries to make sense of the situation, he discovers that the watch's power comes with a cost, and their encounter sets off a chain of events that could change both their lives forever.