Which Nintendo Switch game was the first in the mainline Fire Emblem series to feature a fully explorable monastery hub?

Fire Emblem: Three Houses was the first mainline Fire Emblem game to feature a fully explorable monastery hub.

Nintendo released Fire Emblem: Three Houses for Nintendo Switch on July 26, 2019. Much of its non-battle activity takes place at Garreg Mach Monastery, where the player can walk around, speak with characters, teach students, complete tasks, and manage relationships.

The monastery is connected to the game’s calendar system. The player chooses activities during free days, while lessons and battles shape the students’ abilities and class progression. These choices support the game’s three central routes, each associated with a different house.

The monastery should not be confused with the setting of Fire Emblem Warriors: Three Hopes, a spin-off musou title that uses characters and world elements from Three Houses. Three Houses is the mainline tactical role-playing game with this hub structure.