Haruka Fukuhara

Hiwa Natsunagi is a high school student living in Iwaki City, Fukushima Prefecture. Worried about what to do with her life after graduation, she spots a poster for Spa Resort Hawaiians - the "Hawaii of Tohoku", a place where her sister used to work - and applies to their hula dancer campaign on a whim.

Satomi is fine being alone until an AI named Shion joins her class with a song and a promise to make her happy. While Shion’s musical numbers and princess gowns don’t quite pass as human, her antics bring Satomi closer to four other classmates. Together, they make memories worth saving, but even our most precious data can be erased.

A shy high-schooler, Naomi, meets a mysterious man who claims to be his future self. This future Naomi tells him that he will fall in love with his classmate Ruri, and that Ruri will be killed in a subsequent accident. Naomi struggles to change the future in order to save Ruri’s life, as he learns Naomi’s true purpose and the secrets of his world.