Because Japan.
But kiddie porn? Top kek, no. They designed the Pokegirls as eye candy that the artists and viewers alike enjoy. Also, she's fictional. The age is just there for the target demographic to identify with. The girls themselves are more mature than ten, in both body and mind. Letting a real ten-year-old go out into the wilderness is sending them to die. Again, fictional. These characters are supposed to serve as role models for kids and putting an age to them helps make them more relateable, despite their maturity.
And they're just panties. It's not like her tits are flopping around.
And I am very much looking forward to what they do with Serena.
