C270 The Ship Girl Was the Best!!
The otter's absence from the story might simply be because the protagonist already has an abundance of treasures, rendering it unnecessary.
"It's not necessarily in danger, but once we spend those points, they're gone for good!"
Five hundred points was no trivial amount, and the amulet seemed to be worth every point. But to use it on a little otter that hadn't reappeared in the story..