Mirai Nikki: Redial

Yuno Gasai is a high school freshman with a stable home life and a few close friends. She often feels an unshakable sense of absence, as if a crucial figure is missing from her life, as though she once tried hard to remain with them. After a beach trip with her class, she begins receiving messages from a voice only she can hear, telling her to find someone she urgently wants to reunite with. She soon enters an unfamiliar world with the sole purpose of finding this unknown person. Despite challenges, she is determined to meet them again.