I've been slowly making my way through the third version, aka "headliner" for a rough translation, and the two base versions are being released this year in English! To explain the series, it's a lot like Shin Megami Tensei, because you befriend (not capture like pokemon) Yo-Kai, little mythical beings that cause everyday issues. (I mean, recently, some of them have been hitting full on demon tier, though...)
The battle system is rather fun, and I highly advise that you at least play the original.
The Sushi and Tempura versions of the 3rd game are releasing in Japan this year, but I'd hold out on those until an ultimate edition comes out.
Any thoughts on the series?
Yo-Kai Watch 2 Shinuchi Version