Time to see what's going on with Siegbert and his group. Once again, the units are recovering from their recent loss, and most of them get into disagreements. Velouria even makes Percy cry by being blunt about what probably happened to Arthur. Siegbert debates whether or not he should run away or fight, but with the help of his retainer, Soleil, he decides to fight on. Everyone forgives each other, and it's off to battle.
Now this map took me multiple tries to get right. Much of my failed attempts happened around the base of the wall where Hisame and his units are. Much of it involved RNG shenanigans not happening in my favor (those Samurais can be pretty dodgy), though one was a misstep where I put Percy in range of Kiragi's launcher, causing him to be weakened and killed by the nearby Mercenary. I did make it very far in another attempt, though the failure resulted from Selkie being a dodgy unit and myself not anticipating her personal skill. Even then, this was still a fun map (though I guess it's because the Hoshido Wall is one of my favorite maps in all of Fates).
On the successful attempt, the battle started with Ignatius pairing up with Siegbert (and Ignatius stayed that way for the rest of the battle for the Dual Guard bonus and to make Siegbert almost indestructible), and then Siegbert weakening one of the units around the top of the starting point. Percy made the finishing blow afterward. Velouria and Soleil chilled around the back to bait one of the Fighters toward them. On the following turn, Percy took out the unit with the Pike-Ruin Club to take it from him. Siegbert weakened another unit, and Velouria finished it off. Siegbert then arrived at the first batch of tiles around the Cavaliers' area to bait them towards him. He took out one of them, then another on the following turn. Velouria handled the last Cavalier, and Percy + Soleil moved towards the forts. A Diviner+Dark Mage and Cavalier+Archer pair-ups appeared in the forts to the right, so I sent Siegbert to handle them. He managed to work up a Dual Guard meter to shield against the magic units, so handling those two team-ups were pretty easy. He then returned to the other units to heal up at the forts, then it was off to fight Hisame and his units.
Siegbert dealt with the two Knights, as well as the two magic units. He's about at half health at this point, but with only the two Mercenaries and Hisame+his Samurai, Siegbert didn't have to worry about being killed. Taking out the units wasn't very hard for the most part. Siegbert managed to take out Hisame, and it was around that point that Forrest and his forces arrived. I moved Siegbert+Ignatius closer to the enemy forces near Forrest and his gang, while Velouria+Soleil and Percy handled the Samurai left behind. Forrest's crew take out the enemy soldiers close by with fair ease, and Forrest heads straight to Siegbert to meet up, thus giving me access to 6 more units.
It was around this point Shiro and his forces arrived. Great, Shiro again and the Raijnto... except this time, there was no running away from him. You HAVE to take him out since the mission objective is "Rout the Enemy." Luckily, the game makes it manageable. Caeldori has a Swordcatcher, and she flies toward the forts below to summon more Pegasus Knights. I pair Nina with Percy so that he won't get doubled by them, and I send him off because he has the Pike-Ruin Club to slaughter all of them. He takes Caeldori's Swordcatcher in the process, and then he heads back to the main group to give Siegbert a Swordcatcher. While he had a 55% chance of landing a hit, Siegbert took out Shiro in one hit thanks to this newly received weapon. There was still Midori, Rhajat, and Asugi to handle though. Siegbert one shotted Rhajat; I forgot who took out Asugi though. I do know that Midori was taken out with the help of Ophelia and Velouria. With those units left, the only units left were Female Kana, Selkie (who paired up with Kana halfway through the fight), Mitama, four Knights, two Archers, Kiragi, and the two Spear Fighters standing next to him.
Siegbert climbs up the far right stairs and kills the Archer there, positioning himself so that he could take out the two Knights that would head towards him. After those two were dealt with, he headed back down the wall and proceeded toward the farthest left stairs. A similar strategy is applied: take out the Archer and position himself so that the two Knights will come toward him so that he can snag some easy kills. The plan works, but Kana, Selkie, and Mitama chase after him. Siegbert then moves into Kiragi's room, causing Kana's group to retreat. Dwyer moves along the bottom portion of the wall to be within range for Physic and Rescue use for Siegbert. Siegbert took out the first Spear Fighter with a critical hit. It takes two hits to take out the second one. Siegbert does get some damage in the process because the Spear Fighter had a Bolt Naginata, but it wasn't that troublesome when going up against Kiragi.
You see, unlike Takumi in Conquest Chapter 23, Kiragi doesn't have Point Blank, so you could safely attack him from one space away. It took several turns for Siegbert to take him out though, because he wasn't landing one shots and Kiragi kept healing himself thanks to his Vulneraries and the throne he was standing on. Once Kiragi was finished, Dwyer used Rescue to bring Siegbert+Ignatius back to the bottom of the wall without having to go through Kana's portion.
Siegbert worked his way back, and he took out Mitama to build up a Dual Guard meter. Thus, when Kana attacked, she only landed one hit. Siegbert then retreated to the bottom of the wall for Dwyer to heal him. Then Siegbert went up the wall and let Kana attack him while damaging her in the process. This pattern happens for the next several turns until Kana is finally taken out. Once that happens, two more magic units arrive from the left and two Cavaliers from the right. Siegbert retreats again to be healed up. After that, he went back up to deal with Selkie. It was fairly easy for him to defeat her, since his defense was so that Beastbane didn't harm him at all (Selkie only did one damage as a matter of fact).
I then moved all the anti-mage units to the left and the physical units to the right respectively. All the units climb the wall afterward and take out those last few units with ease.
After the battle, it looks the ultimate showdown between Hoshido's children vs Nohr's children. They are warped into Valla and notice the human sides of each other. It hits them that they are both coming from similar experiences, and thus they aren't enemies to each other. Everyone warps back to the Hoshido Wall, but now the two Kanas want to kill each other. Just as its about to get ugly, Shigure arrives to save the day. He sings to calm them down, and oh my, Matt Mercer's singing was on point! Shigure then warps the children to Valla again to explain the situation.
As it turns out, the Hoshido children and the Nohr children come from the Birthright and Conquest universes respectively. Anankos wants to begin the next phase of his plan of wiping out humanity by having the children kill each other by messing with the Astral Planes. This fact causes the children to have some animosity towards each other just as they were about to get along. This is particularly seen with Shiro and Siegbert, who start questioning each other with hostility how the other's sacred weapon probably killed their fathers.
I also find it funny how if you give your Kana a gender-specific name, it will still carry over to the other Kana's parent. It was pretty much intended for the name to be Corrin here, but thanks to Corrin being an avatar character, you can make things a bit awkward.