Yo-kai Watch Shadowside the Movie: Resurrection of the Demon King is a Japanese animated film that was released in December 2017. It is based on the popular Yo-Kai Watch video game franchise and is the fourth theatrical release in the series. The movie was directed by Shinji Ushiro and produced by several companies including OLM, Inc., Dentsu, and TV Tokyo.
The plot of the movie follows Narukami, a boy who can see Yo-kai (supernatural creatures) that have become increasingly dangerous and powerful in the new Shadowside era. Narukami teams up with his friends Natsume, Keisuke, and Touma to defeat these Yo-kai and restore peace to their world. However, a new threat emerges in the form of the Demon King Rasen, who was sealed away centuries ago but has now returned to wreak havoc on the world of Yo-kai.
To defeat Rasen, the heroes must travel back in time to the Edo period and enlist the help of several historical figures, including the legendary detective Prince Shotoku and the samurai Ieyasu Tokugawa. Together, they must stop Rasen and prevent his resurrection, or else the Shadowside era will be doomed to eternal darkness.
Throughout the movie, the main characters face numerous obstacles and battle against powerful supernatural enemies. The film features colorful animation, thrilling action sequences, and catchy music. Overall, Yo-kai Watch Shadowside the Movie: Resurrection of the Demon King is a fun and exciting adventure for fans of the Yo-Kai Watch franchise and anime in general.