Garnet Cradle Portable: Kagi no Himemiko

Miku is in the literature club and has been asked to write the script for the school festival play. She reads the original book it is based on and starts to feel that the ending is wrong. Days later she falls into a mysterious fountain inside the school and wakes in another world where her classmates exist but with completely different personalities. The story from the book begins to play out around her, heading toward the tragic ending she doubted. When she comes back, time has reset: she has the book again, from the beginning. She understands now that the two worlds mirror each other and repeat. She decides to rewrite the story — and change what happens to the person she cannot bear to lose.