Doraemon: Nobita and the aftermath

Nobita saved the world... Then Doraemon left, and took the proof with him. Now 18, Nobita is alone, haunted by memories of epic battles and friendships that only exist in his head. He's learned how to live on his own. He's built a life of quiet anonymity, desperate to escape his past. But the past won't escape him. When a familiar face returns to drag him into a war spilling out from the worlds he once saved, Nobita must make a choice: stay in the safe, lonely world that has forgotten him, or embrace the brutal legacy of the false chosen one and fight once more.