Kazuma often gives Teppei candy for his hard work, or just simply for being cute. Though still very young, he often tries to defend his sister when anyone bullies her. This is shown when Shōma was criticizing her; Teppei defends her by punching him in the leg and saying, "Shō-chan, you bullied Bun-chan/Buncha" with his fists balled up in anger.