A fourth member unexpectedly joins the group at the end of this episode, but before the trio becomes a quartet, they’re saved by Dominica Scola, who invites them to her manor, and everything there is a bit…off. First of all, the place is run down and deserted, save a cat, and completely filled with statues and paintings of Scoda.
When Tooru executes Plan A—simply asking for Goz’s remains—it’s no surprise the warrior ruler refuses; judging from the state of her existence, she’s longed for a good fight for some time. But I like how he’ll do this each time: after all, the goal isn’t to get into fights, but to fulfill the wishes of the master, i.e. Chaika.
The twist is that the ruler they meant to take the remains from died herself years ago, having fulfilled her purpose: defeating Goz wih the other seven. That left her dragoon alone and without a purpose, or rather to find a new purpose. It’s the dragoon they fight, not Dominica, and she can take many forms, from her master to a metal dragon to a cat to what must be her “default” form, a girl called Fredrika.
Having a defined purpose in life is a recurring theme here, with Chaika’s purpose seemingly to gather her father’s remains. By hiring Tooru, she gave him a fresh purpose suited to his nature. Interestingly, Akari, who seems to hold a legitimate flame for him, wasn’t able to do this, but could only stand by as he “rotted on the vine” while she adapted to a quiet domestic life.
By allowing (or at least tolerating) Fredrika to accompany them, they’re gaining a powerful temporary ally, and she’s gaining a new purpose: to follow Tooru and eventually kill him, presumably for his transgressions. As for us, we get to hear Saito Chiwa show off her vocal range.