I think Koa is the first person in the pool who can pull of all of the sizes without looking weird to me.

Koakuma -> Akuma -> Daiakuma -> Kyoakuma

Koa lewdness increases geometrically with breast size.

4 is the only option.

NNescio said:

Koakuma -> Akuma -> Daiakuma -> Kyoakuma

I think second one should be Chuuakuma.

SoylentRed said:

I think Koa is the first person in the pool who can pull of all of the sizes without looking weird to me.

She IS a succubus after all so its to be expected or at least looks like one.

NNescio said:

Koakuma -> Akuma -> Daiakuma -> Gouki

Fixed

Kei_Fujitora said:

Fixed

Well, you made me laugh.