Kaito is a university student who fell in love with Rin. But when a tragic accident takes her life, his world falls apart. After attending her funeral, he travels to Tokyo to meet Rin’s close friend, Misaki, to deliver the heartbreaking news. However, something mysterious begins to happen — Kaito discovers that he has the ability to travel back in time and return to the present. This marks the start of his desperate journey to change the past and prevent Rin’s death.

At an elite high school where wealth and status rule, Akira, an ordinary student, tries to blend into a world he doesn’t truly belong to.One quiet afternoon, he stumbles upon a forgotten, dust-covered library hidden in the far corners of the campus.There, he unexpectedly meets Kana — the most admired and mysterious girl in school.Curiosity draws them together, and within the silence of the ancient shelves, they discover a torn, magical book.Only one page remains, telling the tale of a forbidden love between a prince and a princess from two warring kingdoms, forced to meet in secret under threat of war.Just beneath that single page lies a message written in fading ink:"Finish the story. Find the missing pages."As Akira and Kana begin their journey to uncover the book’s secrets, reality begins to blur with fantasy —and what started as a school mystery becomes a doorway to something far greater... and far more dangerous.Are they merely readers of a forgotten tale?Or are they destined to write its ending — with their own hearts?