Homare Kuba is a 25-year-old twin brother employed by Somuku Kanou, working alongside his twin Misao as battle butlers and subordinates. Their duties include acting as bodyguards for Yukiya Ayase. Homare possesses black hair, blue eyes, stands 1.84 meters tall, and weighs 74 kilograms. He shares a history as a former teen rebel with his brother and Kanou, with implications of Kanou's potentially harsh recruitment methods.

Homare experiences a significant, violently overwhelming physical attraction to Ayase, sometimes triggering near-seizure reactions. This attraction solidified after he rescued Ayase from a sexual assault attempt by Ayase’s university acquaintance, Iida. Despite these intense feelings, Homare consciously suppresses any romantic or sexual pursuit due to unwavering loyalty to Kanou and acute awareness of Kanou’s extreme possessiveness and violent jealousy concerning Ayase. Homare accepts his position as a hopeless suitor and romantic runner-up, acknowledging Ayase’s primary connection remains with Kanou.

Internally, Homare fundamentally disagrees with Kanou's domineering and controlling approach toward Ayase. He believes he would prioritize Ayase's autonomy and treat him with greater respect and less possessiveness if in a relationship. He occasionally demonstrates this perspective by defending Ayase or encouraging him to assert himself more directly with Kanou. Outside his professional duties and unrequited feelings, Homare maintains a distinct personal interest in automobiles, owning a Nissan Skyline GT-R valued at approximately 5.9 million yen. His role centers on being Kanou’s loyal employee while grappling with restrained attraction toward Ayase.