Chihiro Yoshioka, a member of Sayaka Koyanagi's group, has short red hair and brown eyes. Her monster form manifests animal ears, usually hidden under a helmet for discretion. Her defining kindness and deep affection for animals fuel her aspiration to become a veterinarian. This wish granted her enhanced hearing to perceive and understand animal emotions. She shares notable similarities with Shuichi Kagaya, including self-perceptions of weakness and an aversion to conflict. Shortly after Shuichi joins the group, Chihiro contacts him, bonding over their mutual fondness for animals. She enlists his help to locate her lost wallet. During their search, they are attacked by Subaru. Facing imminent danger and spurred by shared resolve, Chihiro and Shuichi fuse into a single fox-like entity. This fusion form gains heightened agility, elongated limbs, claws, dual tails, and transforms Shuichi’s firearm into twin leg-mounted weapons. Within this merged state, they experience each other’s memories and emotions firsthand. The confrontation ends when Chihiro, recognizing Elena Aoki from Shuichi’s memories, refuses to fight, dissolving their fusion. Following this event, Chihiro retains access to Shuichi’s memories despite his amnesia. Recalling a phone number from those memories, she contacts Elena, urging her to assist Shuichi and Clair after discerning his lingering emotional connection to Elena. Elena declines the request. Chihiro’s abilities focus on her monster form’s fox ears, enabling communication with animals and sensing their emotions. Her combat effectiveness primarily emerges during fusion with Shuichi, where their synchronized resolve unlocks significant physical enhancements, though this fusion depends on profound compatibility and identical objectives. Her relationship with Shuichi centers on empathy and shared vulnerability, their fusion highlighting a unique synergy that contrasts with Shuichi’s dynamic with Clair Aoki. Chihiro’s interactions with Clair are strained by Clair’s possessiveness toward Shuichi, causing Chihiro apprehension. Another group member, Ikeuchi, harbors feelings for Chihiro but struggles with cowardice.