Akihiko Hadano, a 27-year-old male with striking grey hair and piercing grey eyes, stands at 1.78 meters tall. Born on September 15 with blood type O, he serves as a supervisor in a professional environment, where his clashes with subordinate Minori spark frequent tension. Their opposing personalities ignite heated debates during both work tasks and social gatherings, including company drinking parties.

After missing the last train following one such event, the two reluctantly find themselves stranded at a capsule hotel. An unforeseen mishap forces them into sharing a single unit, culminating in Akihiko falling ill with a fever that leaves him dependent on Minori’s aid. This incident becomes a turning point, unraveling guarded vulnerabilities and fostering an unanticipated emotional candor between them.

In the manga adaptation, Akihiko’s portrayal delves deeper into his layered persona. He displays a mischievous wit, often teasing others with lighthearted humor. Though outwardly hot-tempered, he gradually unveils a reflective, emotionally intricate side, wrestling to voice his inner turmoil. Subtle scenes contrast his typically authoritative demeanor with flashes of tenderness and silent affection. The anime adaptation, conversely, presents a more streamlined portrayal, emphasizing his assertive professional facade while omitting the nuanced emotional depth explored in the manga.