that fucking smiling farlyn monster stalking around on the chapter title page
re: kensuke
if you remember, the lead living armor had created (remember, they actually make the armor, that's where there's space in between the interior and exterior for them to live) a lion head motif as a helmet/head. Pretty sure kensuke didn't actually change, and it's because he's a living armor that he's able to interact with the dungeon at this point. Creatures don't live in a place for hundreds of years without being to move around in it or interact with it.