Zakazumi Tsukichi appears to be a very anxious and soft-spoken character at first, but quickly warms up to a peer, which spikes his confidence in the first trial. He hates admitting he's wrong, which is why he and Aki clash so often. He has a clear voice, with the occasional stutter when he feels threatened. He has an antagonistic yet childish nature, which leads people to either hate him or treat his as a kid.