Buuump!
Another thing that's bugged me - Suika. Her power is manipulation of density and sparseness. Notice this is not manipulation of mass. So with that in mind, when she takes on her giganto form, are we to take this to mean she has lessened her density to be able to have the same mass at this size? Are her tiny-little-Suikas actually super-solid?
Now let's come to that from other side. What mass does Suika have?
You may expect her to weigh like 10-year loli, but look here:
Do you remember this spellcard? Here Suika throws a huge boulder at her opponent.
And now think. Boulder, being at least twice Suika's volume and
2.7 times her density, gains a clearly visible velocity, while Suika, despite freely flying in air at the time, doesn't move much.
Actually, when she spins that poor rock before throwing, she does it like she weights nearly dozens of those boulders - the rock moves with a fairly large radius, while Suika stays at the same point.
So, and how does this spellcard estimate Suika's mass?
40 kg * 2 volume suikas * 2.7 density suikas * 10 torque suikas = 2160 kg
Heavy girl, isn't she? :V
And next time, we'll talk about changings in potential energy of intermolecular interaction in the Suika's body. To be continued~ (maybe)
