Aoba Hashibira

Aoba bears a strong likeness to his ancestor, with delicate features that often lead people to mistake him for a woman. His hair is black and reaches his shoulders, framed by overlapping bangs above emerald green eyes. Unlike Inosuke, he has a slighter frame and pure black hair rather than a black-to-blue gradient, a trait inherited from Aoi.

For his research work he dresses in standard lab attire: a white button-up shirt under a lab coat, paired with blue trousers and black shoes.

In sharp contrast to Inosuke, Aoba is shy and notably intelligent. Leading the team that studies the Blue Spider Lily, he holds a public press conference to apologize for an error in their research and shoulders the blame himself, which marks him as earnest and sincere.

For all their differences, a thread of similarity to his ancestor remains. After the setback in his work and the criticism that follows, he expresses a wish to retreat into the mountains and live by himself.

Aoba's research becomes public when one of the Agatsuma siblings spots a news article about it on the way to school. The article reports his finding that the Blue Spider Lily blooms only in daylight for a mere few days each year. After a mistake in the study, the flowers wither and die, prompting Aoba and his team to apologize before the public.

He is later seen anxious that the error may cost him his job, again musing that he would rather move deep into the mountains and live in solitude. He eventually befriends Sumihiko Kamado after the two cross paths in a park, and the pair play badminton together.