Rakia

is a Japanese light novel series written by Suo Tsukasa, with illustrations by Kuma. The series began publication on June 10, 2006 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
That day, Takaichi Mito, a high school student, woke up with an alarm clock that he didn't remember setting. When I got down to the dining room, for some reason the exact same day as yesterday had begun. Suspicious, Kiichi tells the people around him that he is "repeating the same day," but he is not dealt with at all. Although he is confused, he goes to school, but the situation remains the same. And the next day was the same as "yesterday". Meanwhile, it turns out that Kiichi's classmate Mai Ueki seems to be in the same situation as herself ...