This character has been bugging me for a while, since she looks like a copyrighted character cosplaying as Cure Black, but I can't pinpoint it to whom... :/
If I had to guess, I'd go with an older Sawa Azusa but I'm probably way off...

The commentary talks about ママキュア. Which seems to be mothers with the magical girl clothes of their daughters, so I'm assuming this is misumi rie, I don't actually know about the show so please correct me if I'm wrong.