They wander in the cracks of time. They integrate into history and correct history, but they cannot change history.
They are not humans, but they are not gods either. They have immortal life, but experience the pain of reincarnation.
They have an ageless appearance, but they cannot grow old together with their loved ones. While changing the destiny of others, you cannot control your own destiny.
In a given ending, taking the course they want may be the only thing they can change.
Do you choose to continue wandering, or turn into dust in history... Or maybe the choice is never up to you.