Check out this Fire Emblem: Three Houses guide on the game's online features. Including exchange students, fallen warriors in battle, the amiibo gazebo, and the expansion pass!
FE3H, Abyss Facilities Guide - Things You Can Do
Online Multiplayer Features Fire Emblem Engage (FE Engage)|Game8
Thief, Fire Emblem Wiki
It looks like the next Fire Emblem: Three Houses DLC has been revealed
FE3H, DLC Paralogue Black Market Scheme Guide - How To Beat
Create a FE3H Fire Emblem Three houses (MASSIVE SPOILERS) Tier List - TierMaker
Fire Emblem: Three Hopes - How To Play With Friends (Multiplayer Guide)
FE3H, Online Mode Features Guide
fire emblem three houses - What is the purpose of connecting to the internet and playing online? - Arqade
Fire Emblem: Three Houses class system explained - Polygon
Dimitri's feeling blue – Fire Emblem: Three Houses review — GAMINGTREND
Fire Emblem: Three Houses - Online Features – SAMURAI GAMERS
Fire Emblem: Three Houses - Wikipedia
Fire Emblem: Three Houses, Fire Emblem Wiki