Usually a bad guy just wants more power, for reasons. But once Kugaha truly gets into why he wanted to “start over” with Bishamon, it wasn’t just to become her new exemplar. He truly believed this was what needed to be done. Bishamon had, after all, forsaken her war god legacy and horded “worthless” regalia, dragged them into her centuries-old grudge against Yato (based on a misunderstanding no less), and got them and herself corrupted.
But in his “selfless crusade” to rid the universe of this “selfish, detestable” Bishamon, he forgot one thing: his place, in the order of things. As Yato remarks when he diagnoses Kugaha’s plan as an elaborate cry for mommy’s attention, gods can do no wrong. They are above the morals of humans, Kugaha included. Her will reflects the will of the universe, and cannot be questioned just because Kugaha doesn’t like it.
More importantly, Kugaha deeply underestimated Yato’s power, especially now that Sekki is two swords, sharper than ever, and no longer conflicted about using deadly force. When Kugaha plays his trump card: his skeletal dragon phantom, Yato and Yukine dispatch it with ease.
Yato prepares to dispatch Kugaha as well, but Bishamon stands up and shields him, refusing to let Yato touch her treasured regalia. Never again, it seems. The War God who had escalated matters so far so recently is the voice of peace here, recalling how she and Kazuma first met Kugaha, and how he became a valued member of her family. Her words and her apologies cut Kugaha to the quick; I might have even detected a glimmer of shame.
But once word comes that another dragon Kugaha loosed in the mansion is responsible for killing so many of her regalia, Bishamon knows what must be done; she’s just more merciful than Yato would have been, releasing and exiling him rather than taking his life outright. It’s an act that doesn’t forgive what he did, but acknowledges he believed he was doing right by her as well as himself. But he’s not a god, and he wasn’t right.
Yato, Hiyori and Yukine then fade out to let Bishamon deal with the second phantom, which carries the lost and still-vocal souls of her regalia. She arrives in the nick of time to save the group of survivors, calls the name of the oldest, a rusty swordstick (in a return to her humble roots), and brings the monster down as her lost children cry out for her.
This is the war Bishamon fights. Not some glorious bout on a barren hill that will be recorded in the annals of history, like Kugaha might have wanted. Instead, Bishamon is constantly fighting a war against neglect and cruelty of the near shore. She adopts those who had nowhere else to go because no one else will, and because she alone has the strength to bear so many.
When the Ma clan was wiped out, Bishamon lost a battle, but not the war, as she and Kurama started over not by killing herself and resurrecting, but taking the ruins of what remained form her defeat and turning it into a fresh victory, her current Ha clan. And standing beside her during that resurgent win was her trusty exemplar Kurama.
When Kurama awakes to find a healed Bishamon smiling over her, he is ashamed for twice disgracing her, and asks her to release him. But like Kugaha, he’s wrong, and Bishamon can do no wrong. She still needs him in the ongoing war to help as many lost ones as she can. It’s a neverending war, but she is timeless.
And one reason she needs him so badly is because she is unaccustomed to not holding in the manifest pain of her regalia. This is something she’ll work on no longer doing, so something like Kugaha never happens again. To that end, she’s begun an exchange journal with her regalia that she asks Kurama to add to, after she lifts his exile and asks him to return to being her exemplar. And if the War God can forgive him, it would be the highest insolence to not forgive himself.
This was a gorgeous and moving conclusion to the Kugaha vs. Bishamon arc. It managed to give Kugaha a little more dimension before shipping him off, and succeeded in bringing Bishamon and her family to the forefront as a larger-scale analog to Yato’s little but loving family. And it just may have ended Bishamon’s grudge, which dates back to the show’s last season, which is huge, because maybe henceforth she and Yato can interact civilly!