Yo-kai Watch is a series of role-playing games, created and developed by Level-5. The original game was released for Nintendo 3DS in Japan in July 2013 by Level-5, while in North America was released in November 2015 and in Europe in April 2016 by Nintendo.
The protagonist is a guy named Nathan, who, one day, while looking for insects in the woods near the town of Springdale (Sakura New Town in the Japanese version), finds a capsule machine next to a sacred tree.
When one of the caps opens, the ghostly Yo-kai Whisper comes out to give Nathan a special device known as Yo-kai Watch. Using this special watch, Nathan is able to identify the various Yo-kai.
With the help of Yo-kai Jibanyan, a cat-type Yo-kai, Nathan and Whisper begin to make friends with all kinds of Yo-kai who can evoke and fight instead the most malicious ones they encounter in the city and cause trouble terrible.