Miwa

In an abandoned factory on the Japanese island of Okinawa, the U.S. army secretly developed a serum called "DNX" that is able to bring the dead back to life. Something went wrong and all scientists were killed. Now meet Saki and her gang. They just robbed a jeweller and are on their way to meet some Yakuza for a big deal. Guessed their meeting point? It doesn't take long time and an army of bloodthirsty zombies is after them. Soon everybody is running and fighting for his life... (imdb)

Aoi and Riku, who have been friends since they were five years old, are part of a band with other students at their university. Riku is known as being unflappable and "perfect". After a misfired performance on Aoi's birthday she has a tragic accident. She awakens to find herself re-living the past week. Riku reveals that he can turn back time, allowing him to perfect his apparent abilities.