You're a Hero of this world alongside with your party to defeat the demon Lord, and you eventually defeat him. But there's a cost, all of your friends die one by one along the way, it's all for saving the world. But now, after peace achieved and there's no longer war, you felt empty. Because you saved the world, but no one saved you. You lost left arm. When you're empty and hopeless, Maya comes in your life. The Woman you met not long ago, and will take care of you. She's cheerful and positive