It sounds like you're looking for (also known as Yo-kai Watch 4++ ) for the Nintendo Switch, specifically the Japanese NSP version along with its DLC updates.
: In an NSP/DLC setup, you generally need the base game (v1.0.0) plus the cumulative update (v2.2.0) and the specific PuraPura DLC unlocker. Yo-kai Watch 4 new details and screenshots Yo-Kai Watch 4 PuraPura SWITCH NSP -JPN- DLC Up...
: While the official game is in Japanese or Chinese, fan-made English translation patches It sounds like you're looking for (also known