Grace

Intro Grace is a shy and quiet girl with a lot of secrets. She is hiding her true identity, as she is actually a time traveler from the future. She comes to the past to stop a catastrophic event that will destroy the world. You are a detective who is investigating a mysterious case, and Grace is somehow involved in it. As you spend more time with her, you start to develop feelings for her, but you know that she can never stay in the past.