Fire Emblem: Three Houses has a very detailed story with several outcomes and paths for your character to follow. These include the underlying themes in the main story as well as the backstories of the varied cast of supporting characters. Your choices affect how the supporters interact with each other and with you.
All of these create chances to hear and see dialogue where the characters reveal things about themselves. Not to mention, with the possibility that some of the characters can die, you might never get the chance to hear their tale. Obviously, there are major spoilers ahead, so read at your own risk!
10 The Burden of a Crest
In this world, sometimes children are born with supernatural powers known as Crests. These help them in battle or boost their abilities. Seen as gifts from the Goddess, these people are considered blessed and held in high regard as nobles. However, as much as this might seem like a benefit, many who bear a Crest see it as a curse.
It is expected, nearly mandatory, for them to have children with Crests to raise the power of their house. In addition, houses with no Crest-bearing children will try to obtain one, even if it means using more nefarious methods. The pressure and the way they’re viewed by others causes many who have Crests to resent themselves and their gift.
9 The Tragedy of Duscur
Hidden across several characters' conversations, there is a tragic story in the history of this game. The country of Duscur was its own independent nation but they were implicated in assassinating the majority of the royal family, leaving only Dimitri, leader of the House of the Blue Lions in the present day.
Faerghus, the kingdom from whence the murdered royals hailed, struck back with a horrific vengeance. Entire cities were all wiped out with very few survivors. The country and its scarce populace are now ruled by the House Kleiman. The population of Duscur are now pariahs, even in their own home. Due to their supposed involvement in the assassination, people everywhere view them as evil.
8 A Strict Class System
In the Kingdom of Faerghus, they have an extremely rigid class-based system and an oligarchy government. Many of the decisions, doctrines, and policies are decided by the Church. The class system is one of those institutions. At the top is the Church that worships the Goddess. She blesses children with Crests. These children are nobles and royalty. These are at the second rung of society. They are organized into houses and a house’s name is everything.
Then, at the bottom, are the commoners. These are people who don’t have Crests. Manners and proper interactions are imperative when mixing with people from other classes. Generally, people don’t move between classes unless a commoner is born with a Crest. This will propel them into nobility.
7 The Church of Seiros
As mentioned in the last section, the Church has great power over the people of Faerghus and is currently lead by Rhea. They are the single most influential power on the entire continent. They hold sway over the other countries as well. In fact, it is because of the Church that the continent hasn’t fallen into war and constant conflict.
They seem to have their hands in anything and everything. They demand utter loyalty to their Goddess. They encourage the strict class system and putting Crest-bearing people on pedestals. However, they are integral to society, as their academies for knights and magic users serve to provide a protective force in the world.
6 Sylvain’s Story
Sylvain is a prime example of how the class system and the idolizing of those with Crests has a negative effect on people. Born as the second child of his house, it was found that he had a Crest while his older brother did not. Due to how highly Crests are prized, the older brother was essentially disowned and cast aside while his family doted on and spoiled Sylvain.
This lead to his brother attempting to kill him several times while they were children. During the game, Sylvain is a vivacious ladies’ man who leaves a string of broken hearts behind him. However, this behavior stems from his upbringing and the attitudes society has about Crests. He knows that women flock to him as a chance to move up, not as a potential mate.
5 Ashe’s Story
Ashe is but a commoner. He is very aware of his status and does his best to maintain the status-quo laid down by society. Ashe had an unfortunate past. His parents perished rather suddenly, leaving him to care for sister alone. He turned to stealing in order to provide food. This is something that Ashe has great shame about.
However, he was saved from what would have been a bad path by a noble who took the two youngsters in. The noble raised the two as his own, alongside his own son, and sent Ashe to a military academy. Ashe became so inspired by that act of generosity across classes that he vows to pay it forward by becoming the best knight he can be.
4 Sothis’s Story
Sothis is a mysterious character appearing and communicating only to Byleth. So, who is she? She is the ghost of the Goddess, who fell in battle against the evil Nemesis. She possesses a very powerful Crest and has the ability to rewind time, which she shares with Byleth. In fact, she shares a birthday with the protagonist as well.
The sharing doesn’t end there, though. Sothis and Byleth are meant to share a body as well. Byleth was supposed to serve as Sothis’ body, her reincarnation back into the world. However, as this would mean destroying Byleth’s personality, she didn’t take the opportunity.
3 Seiros and Rhea
We first meet Seiros in the very first cutscene. She is the founder of the Church of Seiros as its first saint. She was no mere mortal woman, though. She is a daughter of the Goddess (who is Sothis) and the origin of the Crests. From her blood, users gained special powers. Her goal above all is to revive Sothis and she fabricated the Church, its history, and the Crests to further this goal.
She made sure that Byleth was born as the perfect vessel for Sothis to reincarnate into. Everything in this world was puppeted by her to further this end. As no mortal could live long enough to see this goal through, she assumed the identity of Rhea, the current leader of the Church.
2 Flayn’s Story
Flayn is a rather unassuming character. A seemingly naive and sheltered girl cooped up in the monastery, she has a part in the story, but until then, she could be easy to ignore. However, like everything else in this game, she is embroiled in intrigue.
She has a powerful crest from a saint long thought dead and is guarded carefully by her brother, Seteth, as she is sought after by many. Her real name is Cethleann, the same saint that is supposed to be dead. Her brother is actually her father, explaining even further his protectiveness of her.
1 Marianne’s Many Futures
Marianne’s adopted father sent her to the knight school and monastery to train her Crest. However, he wanted her to remain sequestered, much like Flayn, so as to keep her away from those who would want to marry her for their own advancement. The isolation accomplished two things; tanking her self-esteem, and bolstering her faith in the Goddess.
As melancholy as this seems, Marianne has some extremely promising futures available to her, depending on how you play. Having so much alone time allowed her to study a great deal and after the main conflicts in the story, most of her endings involve her going back home and training under her father.