Synopsis: Touma and Reiko accidentally fall into another world where a war rages across the earth. Reiko is taken prisoner by one side, and Touma is enlisted by the other. Both must cope with the realities of their new life, try and find a way to bring themselves home together, and above all, keep their spirits from breaking under the weight of war.
Boring, but Practical: Most of Touma's abilities fall under this. He doesn't wield flashy Sekirei powers, complicated magecraft, or terrifying Noble Phantasms, but given the right tools and a bit of time, he can be more dangerous on the battlefield than most of his siblings.
The Brigadier: Captain Varrot fills this role, since most of the high command are non entity assholes.
Camp Lesbian: Dallas, and boy does she express it. She's utterly terrified of the possiblity that the Emiya Gland could make her straight.
The Captain: Eleanor Varrot - She's even willing to put up with Touma calling her Auntie.
Cerebus Roller Coaster: Like Touma's dual personae, the story becomes far darker in combat, and then lightens up considerably outside of it.
The Good Captain: Once again, Eleanor Varrot fulfills this role.
Ditzy Genius: A side effect of "The Ghost" - Touma has many, many quirks, but he's extremely observant of his allies, with "The Ghost" being able to accurately use these observations to plan out how to use his men in battle.
Drill Sergeant Nasty: Rodriguez, but even he has problems breaking Third Platoon. He especially fails with Touma, as due to all of Touma's mental baggage being offloaded into the Ghost, Touma never shows any signs of anything worse than mild discomfort.
Falling Into Command: Touma is given command over a third of the squad as a platoon leader before they head off into combat. Subverted in that he actually has combat experience and training thanks to his siblings.
Entendre Failure: Freesia attempts a more romantic innuendo when she learns that Touma snuck into Marina's bed because he was cold, under the assumption that he wanted to seek the comfort of a woman for the first time. She's left totally flat footed when she learns he's already enjoyed Their First Time with his wife.
Fantastic Racism: Prevalent against Darcsens. Touma's unwillingness to listen to it is what endears him to them.
Father to His Men: Most of the main Gallian officers. Touma most of all.
Foregone Conclusion: Touma will survive the story, given that he's still present in the sequel when Gekou attends Landseal Academy.
General Ripper: The Gallian High Command when it comes to the Militia. Most of the Imperials.
Sleepwalking: Touma is such a heavy sleeper that one time, he walks around the training field, then back to the barracks and no one knows. And how does his squadmates find out? For the male, it's the case mentionned above. For the female, Touma snucks into their room, climb up and hugged Marina.
Killed Off for Real: Just like in the game, people (including in Squad 7) can and will die.
The Lancer: Vyse, from Skies of Arcadia fame, acts as Touma's second in command.
Like an Old Married Couple: Marina describes Welkin and Alicia's interactions as this. And according to Touma, so does Kiri and Artemis.
The Nick Namer: Touma gives pretty much everyone in his command, plus the other officers, some rather silly nicknames that he calls them by outside of combat.
Not Quite the Right Thing: Selvaria and Eleanor both end up assuming to some degree that Reiko and Touma might be royalty, based on their father being married to many powerful women. Strictly speaking, they aren't, but Reiko doesn't really deny being a princess of sorts, while Touma misinterprets some of Eleanor's statements and just ends up confirming her fears (or so she thinks).
Obfuscating Stupidity: Freesia tends to be extremely flirty with Touma (who is already Happily Married and not extremely interested in exploiting the power of the Emiya Gland), but following a moment where he runs off in embarrassment, it turns out that while she does have an interest in him, Freesia understands and accepts his reservations, and is so flirtatious because his reactions amuse her. She plans to save romance until after the war ends.
Oh, Crap!: Members of first squad have this reaction when they try to claim that Touma's men were interrupting them gathering their water rations, only for Touma to make it very clear he saw them harassing his squad's Darcsen members and is well aware that they are lying to his face.
Only Sane Man: Aika and Karl, both of whom got roped into Third by virtue of being connected to one of the problem children of the squad (who were purposefully shoved into Third).
Rosie get's so fed up with Touma's carefree nature during Squad Seven's first briefing that she tells him to shut up and focus on figuring out how he's going to get his soldiers through this. "The Ghost" takes over and proceeds to do exactly that, unnerving pretty much everyone else in the process due to Touma's sudden mood swing.
Rosie get's in on this again when she states that Touma is probably nowhere near as good as singing as she is. She's literally left speechless in awe when he sings to her. Keep in mind he did so in Japanese, a language she doesn't understand at all, yet is still left in awe.
Shell-Shocked Veteran: Everyone, sooner or later, if they survive. Touma only avoids being this by virtue of the Ghost taking on all of his mental baggage.
Shipper on Deck: Reiko is trying to play matchmaking for Selvaria and Johann.