Akane has a fiery personality and she loves fighting, as long as there is no other weapons besides the person's own fists and body, which lets her get along very well with Nekomaru Nidai. She is eager to challenge someone to fight her and she respects those who are physically strong, and can somehow correctly tell which people would be strong opponents even if they don't look like it. She seems to think that punching things, including people, is the best way to solve problems and her hot head can sometimes get her into trouble. While she also loves athletic things such as climbing and running, she can actually be very lazy and unmotivated if she isn't allowed to do things her own way. She dislikes planning, training, and routines, but has a remarkable talent for inventing her own moves. In general, her mood can shift very quickly. She can bounce between bored, to happy, to angry, and to happy again. Despite her easygoing and aloof personality, she is loyal and protective towards her friends 

Although Akane seems to have a rather serious attitude, she may say some quite out-of-place statements. Even during Class Trials, she tends to say random statements that only vaguely relate to the murder. She isn't the most intellectual member of the cast, being easily confused by complex words, misinterpreting insults and figures of speech, and generally defaulting to violence (or threats thereof) to solve problems. She is also very gullible, often easily believing things people say, as shown as she easily believes people's lies in Class Trials and is surprised when others tell her that they're lying.