I like that the kid had the guts to say "please teach me how to spend money!!" I mean, I don't hate the kid either, the narrative made it quite clear it's also his dad's fault for not teaching him the value of money. So good for him.
Though seriously, he should be simping for this kindhearted gyaru who's too precious for this world, not for some Live2D art and a handful of flirty audio clips. It's impressive how she immediately realized that the best way for her to show him how to live cheaply was to pool their resources and effective form a family unit... Anyway, I'll facepalm if she somehow falls in love with him before he falls in love with her and he's simping over pixels while she's hiding her feelings.