49 episodes
First episode: E1

Keisuke Amano, Natsume's brother who doesn't believe in supernatural phenomena. But as he notices his sister is frequently comes back home late, he decided to stalk her, only to find out she is exorcising evil Yo-kai and running a Yo-kai detective agency. With their secret revealed to him, Natsume decided to let him tag along in her activities as they investigate Yo-kai crimes and take on evil Yo-kai to maintain peace all over the city.
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49 episodes
First episode: E1Quick answers about this series, release status, and episode totals.
Yo-Kai Watch: Shadowside first aired on April 13, 2018.
Yo-Kai Watch: Shadowside currently has 1 season and 49 episodes.
Yo-Kai Watch: Shadowside is ended, and no upcoming episode is currently scheduled.