At first I thought they introduce some rando out of nowhere, turn out it was the parent flashback, and Miko got her power from her father... Also that Seto appearance at the door was actually scarier than any jump scares this series have lmao.
So she decided to send him away and wipe his memories, huh... Well, you know.......... Why they didn't just run away before the tragedy or wipe the memories from the villagers?????
Togo was trying to become the sword itself, he was represented the obsession/madness to the story, while Jinsuke was representative of hard work/persistence (as of now, since he already avenged his father,) just like their fighting style, these two clearly have different theme.