why the red marks on her feet?

It put emphasis on her feet though why the picture is upside-down is something I don't know.

If you're at all familiar with this series, those two feet are like supporting roles.

I know, but putting those marks in there seems kinda random, unless it's meant to be some kind of cockblock in the same way nipples and vag are usually censored in sample pics.

I greatly fear an animated adaptation. Why? I fear that they will treat her the same way they treated Angela in failure adaptation of Ashita no Yoichi.