It's Bacius after all, so I guess that's a given. But something seems off about Mutsuki, like she's a phantom and not really there.
Essentially, the kanmusu are turning into abyssals one by one, and their ability to water walk and what not are signs that they’re about to turn.
It’s kinda like they’re going to heaven. Yuudachi watched shiratsuyu turn into an abyssal and she releases her into the ocean. And the giant abyssal that was shiratsuyu washed up onto shore (and she was dead)
In one of the latter panels, they see like a whole cast of silhouettes in the distance—their dead comrades
It's been so long.It feels kinda nostalgic.O-Okay...!I thought it'd be a good chance to show this to Yuudachi-chan.Yeah.I'll try...My shoes!!!Too bad for me.It would've been great for the three of us to be together again.Ahhh!Are you okay, Fubuki-chan?!Ehehe...