Even though Colbert objects to the idea of launching a surprise attack on Menville, he tells his students that he can handle the situation and asks them to leave things to him. Along with Saito, Colbert works quickly and assembles a set of items to use in the battle. While they’re doing this, he asks about everyone using technology equally in Saito’s world and says that he’d like to see that world. Then, as the two are returning to the waiting girls, Colbert asks Saito to take him to his world when he goes back. Inside the dining hall, Menville is telling Agnès about how he wanted to know how strong his captain was, so he attacked him all those years ago. Unfortunately for Menville, his captain blocked his magic and returned fire. In any case, Menville now demands that Osman send a message to Henrietta asking her to withdraw her troops from Albion. When Osman refuses because he doesn’t have the authority to do that, Menville threatens to reduce the students to ashes. Julio, however, calls this a stupid way of doing things, but before Menville can strike him down, a bunch of balls float into the room. These balls suddenly explode in bright flashes of light, blinding everyone so that Tabitha, Kirche, Louise, Saito, and Colbert can take care of Menville’s men and free the hostages.
Unfortunately, they find out too late that Menville was unaffected because his one eye had been burnt back then. Menville is about to blast Kirche with his magic when Colbert suddenly steps in and counters the attack. To everyone’s shock, Menville quickly recognizes that Colbert is the captain he’s been searching for – the Flame Serpent. After taking care of one of Menville’s men, Colbert instructs Saito and Louise to free everyone and escape before he starts his battle with Menville. Agnès meanwhile watches from the sidelines as it slowly dawns on her that Colbert was the one who took everything away from her, so she charges at him with her sword. Colbert manages to sidestep her, but when she tries to attack him again, Menville lets loose a fireball directed at her. Not wanting Agnès to get hurt, Colbert pushes her out of the way and takes the hit himself. Despite being severely burned, Colbert manages to get back up, and as he does, Agnès notices that the scar on his back that matches the wound of the person who had saved her all those years ago. Colbert then fires off a couple of magic attacks at Menville, but Menville is able to shrug them both off and gathers his power for one massive fire blast. With Colbert’s strength giving out, Agnès takes initiative and rushes at Menville, stabbing him and killing him.
With this done, Agnès returns to the fallen Colbert to ask him why he saved her back then, so he explains that it was because he realized his mistake. Louise, Saito, and Kirche then come to Colbert’s aide since he’s injured, but Agnès wants them to get out of the way so that she can kill him. To the students’ surprise, Colbert feels that Agnès has the right to kill him, and he recounts how after burning down D’Angleterre, one of his men informed him that there was no trace of an epidemic. Colbert had then run back into the burning village and saved the lone surviving girl, and he got hit by a falling piece of wood in the process. He had realized that killing was a crime, even in times of war, and although he is willing to let Agnès kill him now, but he wants her to stop killing in general. Colbert falls unconscious soon after saying this, and Agnès raises her sword to stab him, but Louise suddenly realizes that Colbert has already died. Agnès brings her sword down anyway, though it hits the ground beside him. In the aftermath, Agnès brings Saito a letter from Colbert that she had found in his room. In it, Colbert wrote about his crime and how he tried to make up for it, but he realized that he wasn’t able to. That’s why he wanted Saito to promise not to get used to death, fighting, and killing. At the end of the letter, Colbert reiterated his desire to see Saito’s world and his hope that Saito would take him someday. Saito is barely able to fight back the tears after this, so Louise hugs him and cries with him.
Most of this was pretty predictable given all the hints they’ve dropped about Colbert being the Flame Serpent, but I thought the ending was actually pretty good with the way they handled Colbert dying. The one part that didn’t fit at all was placing the normal ending song right after all the sadness and tears – that would have been a great spot for a special ED or an instrumental piece or something that wasn’t so upbeat. Still, there was some pretty high animation quality this time, at least compared to previous weeks, and I generally enjoyed the episode.
With this, I assume Agnès’ story is done, and we can move on to the actual war now that they keep talking about but we don’t really get to see. I’m not sure how much they can do with only three episodes, but hopefully there’ll be at least a satisfactory ending.