Fire Emblem is one of Nintendo’s longest-running turn-based tactical series, going all the way back to 1990 on the Famicom, and has since spawned a number of titles as well as spin-offs.
Most recently was 2019’s Fire Emblem: Three Houses on the Switch, which featured a new world story and cast of characters. Three Hopes features the same setting, with recurring characters and some key story elements, however, there's a brilliant twist.
Three Hopes is not the first Warriors cross-over or even the first Fire Emblem spin-off, back in 2017 Koei Tecmo created Fire Emblem Warriors which merged classic Fire Emblem characters with the Warriors style gameplay, and while it was well regarded for its action and compelling gameplay, it didn't really incorporate Fire Emblem's strategy elements.