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Aquarina was talking things about skin color, so I had to quickly reassure her of things. It seems she found white skin color very beautiful for some reason, but I told her that her skin color was just as beautiful. I don't know why she got this thought though, but as a little girl, it is the right thing to guide her and tell her that there was nothing wrong in her own skin.
Thinking about it, the thought probably was in her mind for a while, seeing how her father is so white pale but she's a chocolate-skinned adorable princess, so it is quite hard for her to figure out how that works. I would say she simply inherited her mother's skin color. The traits that a child inherit from their parents is usually quite random, sometimes they can even resemble their grandparents more than their parents.
"Thank you for washing my back, Aquarina… Now let's switch so I can wash you too." I said.
"B-But what about the front?" Asked Aquarina.
Check "The Protagnist's Sister Is Actually the Strongest"!