The Fourth Hand
A seer who can glimpse the future. She's best known for discovering Eiji and bringing him into the story. Her Order involves divination, which she calls "Star Seeker."
Here's the weird part: her ribbon—which looks like rabbit ears or antennae—has a strange side effect. Anyone who touches it causes her to rapidly become pregnant and give birth, which drains her powers entirely. The pregnancy can be reversed if she doesn't go through with the birth, but it's still a major vulnerability that defines her character.
She develops feelings for Eiji as the story progresses, putting her in direct competition with Rin for his affection. At one point, she combines her divination ability with Eiji's power, which suggests they have genuine compatibility beyond just romance.
Before joining the cast properly, she was known only as "Subject #23" when she was held by the Hoshimiya Agency—a detail that hints at a darker past before her current story.
Content compiled by AnimeList.moe from publicly available sources.