Akihito Takaba is a freelance photographer in his early twenties, possessing a slender build and standing 175 cm tall with fair skin. His distinctive features include dyed light blonde or silver hair and hazel or blueish-gray eyes, often noted as pretty. Typically clad in casual wear like t-shirts, jackets, jeans, and tennis shoes, he is rarely seen without his camera. Born May 5 in Kanagawa as an only child with blood type O, he now lives in Tokyo. His personality is positive, unwavering, and cheerful, yet marked by significant stubbornness and resistance to authority. His troubled youth involved delinquency during high school, resulting in a significant juvenile record that made him infamous in the Yokohama precinct, though specific details remain undisclosed. Influenced by his father, he pursued photography after graduation, training under a teacher rather than being self-taught. His career began with magazine, catalog, wedding, and investigative journalism gigs, where he exposed corruption and scandals within Japan's criminal underworld.

This investigative work led him to photograph Ryūichi Asami, a powerful businessman with underworld connections. The encounter resulted in Akihito's kidnapping and initiated a complex relationship that evolved into a romantic partnership, culminating in them living together. His connection to Asami repeatedly drew him into peril, notably attracting the attention of Chinese crime boss Liu Fei Long, who kidnapped Akihito to leverage against Asami. Held captive in Hong Kong, Akihito endured physical and psychological torture, leading to symptoms of post-traumatic stress disorder (PTSD) including panic attacks and nightmares. Despite this trauma, he demonstrated resilience, recovering over time while retaining lasting effects.

His relationship with Asami featured significant tension and emotional conflict. Starting with disobedience and rebellion, it gradually deepened into mutual consideration and passionate love. However, Akihito frequently struggled with insecurities about being perceived as merely a plaything or pet due to Asami's power and underworld ties. His dynamic with Fei Long shifted from hostility to grudging respect after Akihito tearfully expressed empathy for Fei Long's feud with Asami, revealing his compassionate nature. This moment prompted Fei Long to release him, though not without regret for their harsh initial meeting.

Akihito faced profound psychological challenges across various story arcs. During the Naked Truth arc, prolonged captivity and torture pushed him to a breaking point, culminating in violent retaliation against his captor. In the Innocent Eye arc, he underwent brainwashing via hypnotherapy and drugs, implanting false memories and conditioning him to kill Asami. This caused memory loss, erasing his past relationship with Asami. The Pray in the Abyss arc intensified his emotional turmoil, particularly concerning his perceived role in Asami's life, though he eventually reconciled these feelings and confessed his love following a near-death experience.

Akihito possesses notable athleticism, including speed and agility that aided him in dangerous situations like rooftop escapes. He is skilled in spy-like information-gathering techniques. Later, he trained in firearms, using this skill defensively, such as when shooting Shuu Sudou. His hobbies include experimenting with cameras, and he treasures a camera gifted by his father. He enjoys grilled meats, junk food, and seaweed salad but dislikes onions and kousou. He exclusively understands Japanese. The meaning of his name reflects his character: "Aki" (明) meaning "bright" aligns with his optimism, while "hito" (仁) meaning "compassionate" fits his empathetic nature. His surname "Takaba" (高羽) combines "tall/high" (高) and "feather" (羽).