This is going to sound like a broken recorder, but yet another solid episode
Spoiler for Episode 17:
Showing not only Kubinashi and Kejoro's past but Aotabō's as well, though the latter's story is pretty much revealed, it seems like there's more to Kubinashi and Kejoro than just their meeting with Rihan as shown after the credits... At least I was right to say that they definitely have a 'thing'
But despite the good guys' hotblooded power-ups and teamwork, the Kyo-Yokai's mid level bosses aren't so easy to get rid off and the fight continues to the next episode with the standard Shounen cavalry.