Chihaya Ohtori arrives as a transfer student, instantly recognizable by her vibrant orange hair secured with distinctive wing-like clips and her bright blue eyes. Her usual attire is a unique brown suit and green-checkered skirt uniform, though she occasionally wears a white dress at her mansion. She possesses extraordinary physical strength, allowing her to effortlessly lift heavy objects, uproot lampposts for combat, and accidentally break things like Akane's coffee machine. A sheltered upbringing leaves her socially awkward, struggling to express emotions and displaying a naive worldview that often makes her slow to grasp serious situations. Despite her airheaded nature, she exhibits low comedic standards and a powerful appetite, frequently eating without concern for diets. Her past is marked by tragedy; she survived the destruction of her village, where familiars were created, after Guardian assassins killed her parents and the other residents. During her desperate escape, she summoned her first familiar from a tree branch, leading to the emergence of Sakuya, who became her dedicated protector and butler. This traumatic history fuels her deep desire for genuine friendships, though her defensiveness and clumsiness initially strain relationships, particularly with Kotarou Tennouji after an embarrassing first encounter where he saw her underwear while helping her down from a tree. In the main storyline, she joins the Supernatural Investigation Club and gradually bonds with its members. Her personal route focuses on developing a romantic relationship with Kotarou, who protects her during conflicts between Gaia and Guardian. Key moments include Kotarou shielding her from a truck (resulting in Sakuya taking the injury) and their joint battles against hostile entities like hound familiars and the antagonist Midou. During a crisis, she uses bandages to augment Kotarou's combat abilities and later reciprocates his love confession after he risks his life for her. Her growth is evident as she overcomes distrust, participates in school activities like the Harvest Festival date with Kotarou, and grapples with the responsibilities of her family's legacy. In the crossover series, her traits are amplified for comedy, showcasing her strength through absurd gags like "Chihaya Rolling" from Okinawa to Siberia. She interacts with characters from other franchises within Kaginado Academy's chaotic scenarios, including space travel adventures and club disputes, while retaining her core attributes of naivety and physical prowess. Her role in this context lacks deep narrative development but reinforces her established personality through parodic situations, such as confronting the Soccer Club or engaging in supernatural investigations alongside the Neo Kendo Club.