Shushu Suruga, 17, serves in the Anti-Demon Corps' 7th Unit. Born November 13th and standing 165 cm tall, she comes from a mediocre background as the youngest of three sisters, never knowing her father and being notably spoiled. She attended the all-girls Bentenjima Girls' High School, resulting in minimal prior male interaction. Seeking excitement and stimulus beyond her mundane life, partly motivated by financial needs, she joined the Anti-Demon Corps. Her appearance features short yellow hair with a greenish tint and matching green eyes, often topped with a ribbon resembling bunny ears. She wears the standard Corps uniform: a sleeveless navy tunic, elbow-length gloves, red belt, shorts, and high-heel boots, with a bust size of 85 E. Shushu exhibits a cheerful, nonchalant, and curious personality, easily provoked despite her carefree demeanor and displaying innocence in interactions. Her limited exposure to males led to immediate interest in Yuuki Wakura, the unit's sole male member. She initially blackmailed him with photographic evidence after catching him peeking at the female bath, coercing him into being her "slave." Her feelings evolved into genuine affection after Yuuki saved her during a Shuuki attack, prompting her to use the nickname "Yukki." She struggles to express emotions directly, often resorting to teasing Yuuki instead, though protective instincts toward him emerge in critical situations. Her abilities stem from a Peach Blessing acquired in Mato. Her primary power, "Paradigm Shift," allows manipulation of her body size. She can grow to gigantic proportions—exceeding house size—for enhanced strength, enabling tactics like crushing enemies or throwing massive rocks. Conversely, she can shrink to miniature sizes, requiring less energy and permitting carrying small objects. Later refinements include selectively enlarging body parts and imposing a three-minute limit on her largest form for intensified power. Notable combat techniques include "Formation S," shrinking to infiltrate an enemy and expanding internally to destroy them. When Yuuki is loaned to her via Kyouka Uzen’s enslavement ability, their combined power creates the "Slave: Iwatooshi" form, amplifying Shushu’s strength to rock-shattering levels but reducing her speed. Subsequent training enabled projectile attacks like hurling boulders and emitting shockwaves or beams from punches. A unique drawback prevents Yuuki from sharing her gigantification; her growth crushes him underneath during joint transformations. Her personal interests include video games and romance manga, the latter cultivated after developing feelings for Yuuki. Trivia highlights include her name's etymology (Shushu meaning "Vermilion Red," Suruga meaning "Fast River/Stream"), a gigantification pose referencing Ultraman, and accidental exposures of Yuuki’s private states, leading to quotes like "Small and cute, aren’t you?" and "That was pretty amazing!" Her character development involves transitioning from seeking thrills to demonstrating loyalty and protectiveness. Training in Paradise Land improved her size manipulation, introducing time limits and partial transformations. Despite persistent but failed attempts to seduce Yuuki—a running gag—she remains a dedicated unit member.