Sandglass of Summer Colors

As summer vacation approaches, Koutarou Makimura is determined to declare his feelings for the charming Kaho Serizawa. However, an unexpected twist sends him spiraling through time, causing him to relive the days of vacation in a chaotic sequence. This disorienting experience unveils a heartbreaking truth: Kaho's life hangs in the balance, with her impending death looming right before the new school year.

Armed with knowledge of the future, Koutarou faces the daunting challenge of altering fate. His quest to save Kaho becomes an emotional journey, as he grapples with the complexities of love, loss, and the consequences of meddling with time. Each attempt to change the course of events brings him closer to understanding the depth of his feelings and the true value of the moments they share.