Tsunagu Hidaka serves as the male beastfolk protagonist in a story depicting a society rife with prejudice between humans and beastfolk. Born to a human mother and a beastman father, his early life and family specifics remain unexplored.

Standing 196 centimeters tall with a birthday on April 16, his beastfolk heritage manifests in a distinct, furry exterior, a physical trait central to his experiences that often triggers human apprehension. His personality is defined by profound gentleness, kindheartedness, and steadfastness. Despite enduring bullying and societal discrimination because of his species, he consistently responds with tolerance, suppressing anger and even offering help to those prejudiced against him. Initially reserved, his demeanor softens as he forms connections. A key complexity arises from his instinctive physiological reactions to human pheromones, especially around the human female protagonist, Mari Asaka.

Key relationships drive his development. Mari Asaka, a human classmate initially nervous about his species, becomes deeply drawn to his character, leading to a mutual romantic bond that challenges societal norms. Yukihiro Aida, another classmate, actively defends him against prejudice, forging a tight-knit trio dedicated to combating discrimination. This circle helps him overcome isolation and build trust.

His story centers on navigating societal barriers as one of the few integrated beastfolk students in a human school. Early experiences involve bullying and exclusion, yet through persistent kindness and the support of Mari and Yukihiro, he gradually shifts peer perceptions. Collaborative efforts to demonstrate his true nature foster incremental acceptance, though prejudice remains a recurring challenge. His growth is marked by increasing emotional openness and resilience in confronting societal biases.