Why Aran cannot Exist

You can also accelerate in mid-air (changing directions and gaining speed towards one side) which is impossible since you can't exerce force unto yourself.

You can exert force on the air around you though, and to conserve momentum, you could change your direction...in theory, good luck with trying in practice though.

Well you applied science incorrectly here.

The ice in Maplestory is 2-dimensional, not 3-dimensional. 2-Dimensional objects are immune to physical damage, since they have no mass to apply the damage on.

They must have a mass, since they are affected by gravity