A student of Arashigaoka Academy. Also, Tsubaki Kureha's only lover when Sumika was alive. Izumino Sumika was mauled by a bear.
Yurizono Mitsuko ate her while Yurishiro Ginko witness her demise. At the last episode, Lady Kumaria has taken Izumino's persona, with bear features, and granted Tsubaki her wish.
