Mihari works as Aito's manga editor, though their connection goes way back—they knew each other in high school. She's got a reputation for being pretty violent, quick to throw a punch at Aito without much provocation. That said, it's clear she actually cares about him, and fans have definitely picked up on the possibility that her feelings might run deeper than just professional concern.
Content compiled by AnimeList.moe from publicly available sources.