A spinoff of the Gensou Suikoden series. Unlike every other game in the series, it takes place in a separate world and has no returning characters or story connections to other games of the series. It is implied to take place in an alternate dimension to the other games of the Gensou Suikoden series (a concept that is briefly alluded to in several of those games).
This tag implicates gensou_suikoden (learn more).