Disappointed that Hagakure-san doesn't have something like a 'predator shimmer' because she's displacing water rather than air and should have small but noticeable difference due to water's interactions with light.

Catloaf said:

Disappointed that Hagakure-san doesn't have something like a 'predator shimmer' because she's displacing water rather than air and should have small but noticeable difference due to water's interactions with light.

I'd imagine a girl-shaped cavity in the water.