Referred Tenkubashi as a "alien" because of his propensity for acting oddly or saying things that do not make sense to him in social situations. He is intelligent and self-aware despite this. He has little to no sense of self-worth and views himself as nothing more than a living, biological weapon, until his friend, Gunji Akira, convinces him otherwise. Somewhat aloof and enigmatic, doesn't show much emotion other than neutrality. Viewed as "Tall, handsome, and quiet" by his classmates.