Movie
Description
Shizuku Ninomiya serves as a Spirit World Warrior and a teacher at Akihito Kanbara's high school. She has light brown hair, often long or in a ponytail, brown eyes with a golden glint, and stands 168 cm tall. Her initial attire is a greyish beige jacket with matching skirt, a striped blue shirt, black stockings, and shoes. Her birthday is June 18 (Gemini) and her blood type is A.

Her personality is characteristically cheerful and upbeat, frequently smiling even during combat. She fights youmu with intensity and reacts visibly to plans falling apart, especially romantic disappointments. These rejections, often linked to her unfortunate date fashion choices, lead her to cope by drinking beer and intensifying her youmu hunting. She maintains close friendships with fellow Spirit World Warriors Izumi Nase and Yayoi Kanbara, having grown up with them.

In combat, she relies on physical prowess and earth manipulation. An expert in hand-to-hand combat, she frequently defeats youmu with kicks and strikes. Her abilities include creating defensive barriers and geokinesis, manipulating the earth to form fissures or protective walls. Her powers possess offensive applications distinct from the Nase clan's defensive focus.

Shizuku first appears interrupting a confrontation between Akihito Kanbara, Mirai Kuriyama, and a youmu in a classroom. She attacks the youmu, pursues it, destroys it, and collects its core stone. Identifying herself as a locally famous Spirit World Warrior, she instructs Akihito to arrange cleanup. Later, she socializes with Mitsuki Nase and Mirai, displaying her drinking habit. Her romantic disappointment is shown when a date cancels via text during a festival, leaving her alone.

In the movie "Beyond the Boundary -I'LL BE HERE- Mirai-Hen", she continues her roles as teacher and Spirit World Warrior. She collaborates with Hiroomi Nase to track and combat shadow entities plaguing the town, defeating most but not all. She participates in the pursuit of Miroku Fujima and witnesses Mirai Kuriyama's berserk state. Post-movie credits depict her ongoing teaching duties, intensified youmu hunting as an emotional outlet, and social interactions with Izumi Nase and Ayaka Shindou. A Mini Theater OVA scene shows her complaining to Izumi about rejection after being excluded from a student sleepover.