>>2692437Yes. All/most KRs are only interconnected for the sole purpose of promotional movies/specials. Other than the few anniversary series explicitly made for cross-overs, the majority are stand-alone.
Gaim is very easy to get into since it probably most resembles an anime in the way its story is structured, but it's also very different from other seasons, so if you watch it and then want to watch other seasons, just keep that in mind, Also, they're ALL toy commercials; don't let anyone try to convince you otherwise.