[Denji blows in her face and it's not a rough enough blow to dislodge her concentration, but she does have to stop herself from smacking him upside the head or something. She still has no idea what she even did that for, but luckily before she can demand that Denji distracts her with a question.]

I used to watch my mother, I guess.

[The truth is, she couldn't say why she knows this the same way she can't say why she knows how long to cook an egg for a rolled omelet. She just does. She grew up with other girls, she had a mother at one point, she went to high school. At some point it was just as normal to know as it is normal to know how to put on clothes. Aki caps the concealer and begins rubbing the concealer with her fingers again, blending it into her skin until it's even across her face.]

It's just the sort of thing you pick up, after awhile.

[And the sort of thing that, sadly, doesn't really surprise her that Denji didn't, now that she actually thinks about it. Someone who never went to school long enough to learn about fiends definitely never had a chance to learn about something like make-up.]

...You didn't have a mom, right? I guess most kids learn from them first. But mine died before I ever wanted to put any on, myself.