藤子・F・不二雄がドラえもんを考案するきっかけとなった出来事は？
Tired of constantly having nightmares, Nobita ask for Doraemon to bring a Dream Machine which would allow Nobita to dream of anything he wants. After an attempt to have a dream about the fall of Atlantis fails, he chooses a dream where he is in a fantasy world with an inspiration from The Three Musketeers. Doraemon disagrees and gives him a lecture which makes Nobita angry and he runs away from home. Doraemon searches him and promises him to let him watch the dream of The Three Musketeers. Doraemon sends him to the dream. At the start of the dream he meets a fairy who brings him to a city in the Kingdom of Yumirume under the attack of Emperor Odrome's army. Enemies start firing at Nobita, only to be saved by the fairy. She cuts off the piece of moon, causing Nobita to blow away. When he gets up he finds himself at the forest and one of the Sherogani swordsman namely Suneo makes him his slave. 
The Three Musketeers