Dream Journey and Daiichi Ruby

Although both of them are small in stature,

Their mature personality befitting a high school student creates a kind of gap, and it's become a popular topic.

...Certainly, both of them have a strong gap between their small appearance and mature personality,

But for some reason, when I look at Dream Journey, she pulls off the look of a character with an adult charm,

While when I observe my Ruby, I perceive her as a small and cute character

What could be the cause of this difference...?

...Ha! Could that be it!?

The lack or presence of "that"!

I must investigate this!!