Doraemon's Happy Journey

Traveling to the world of Doraemon, he became Demushan who appeared in every movie version, and along with it came a series of strange events. The wizard Retina from millions of years ago, the Rat King who has survived for tens of millions of years, and even the monsters in the dream are extremely weird. Countless facts told him that there were countless incomprehensible events hidden in this so-called technological world. In the collision of technology and witchcraft, two different systems, who can successfully survive, and why does everything that is hidden come from this? No heroine! ! !