Fire Emblem: Three Houses’ introduction has been released. The animated opening three minute cutscene takes players into a massive battle. Two sides are facing off, with a blonde warrior leading the charge against Nemesis and his army. (Thanks, GameXplain!)
While initially the Fire Emblem: Three Houses opening focuses on showing its scope, giving us a look at how many units are on the field, it switches to a more intimate battle. The two leaders end up in a duel against one another. Some of it may look familiar, as clips were used during some promotional materials.
Here is the Fire Emblem: Three Houses opening cutscene.