Matsumae works as a teacher at Seinan Gakuin High School, where she serves as homeroom instructor for Shuu Tsukiyama—though her real job is keeping tabs on him for the Tsukiyama family, who employ her as a ghoul. She's the type to stay composed even when things get heated, whether that's facing off against CCG investigators or commanding her own squad of ghouls in battle. Her professional demeanor never really cracks, even under the kind of pressure that would rattle most people.
Her kagune is a Koukaku type that manifests as a pair of branch-like tentacles, which she handles with real finesse. What's notable about her ability is that she can detach sections of her kagune to create barriers—something not commonly seen—that work similarly to the RC Walls in the 24th Ward or the ones in Kanou's lab. These barriers are durable enough to actually slow down pursuers, and they stick around longer than you'd expect from a detached piece of kagune.
Content compiled by AnimeList.moe from publicly available sources.