Matoma
マトマ
Matoma is the staff that Chiaki carries and, like Fumika’s staff, helps her with her job as a mail carrier. Matoma has a male voice and speaks in a monotonic tone. “He” is better at the job than Kanaka is and talks down to Kanaka for doing a poor job.
What interactions that Matoma has with Kaname show is that they get along surprisingly, and comically, well.