Airi and Marina's Mother
She's Airi and Marina's mom. The character first showed up in Oni Chichi: Rebuild, the remake entry in the series.
Before she ended up with Kouzou, she'd been married twice already—which is why Airi and Marina are actually half-sisters despite sharing a parent. It's one of those setup details that explains the family dynamic without getting too heavy-handed about it.
Content compiled by AnimeList.moe from publicly available sources.
