Idk. But it’s not a picture, it’s a drawing. I agree you typically don’t have backgrounds with manga girls in a professional context. I’m not a pro when it gets to pop culture, but I think it’s pretty tame. Every anime girl looks about that age (say school-girl). And they all have large colorful eyes. This one is wearing a boyfriend-style shirt. I don’t think it’s any more ‘sexual’ or ‘child’ than sailor moon or any of the tv series out there.