Suginami is a classmate of Kiyotaka in school who belongs to the newspaper club. He is known for being cheeky, mature and intelligent. His knack for identifying students' specialties has often caused trouble, both small and large. It is said that on the first day of summer, he and Morizono placed cats and dogs over the newspaper and publisher, which led to an overwhelming popularity of the newspaper club. Despite this, Suginami maintains a good relationship with Kiyotaka, although he constantly causes trouble by changing jobs to become an informant for the newspaper club.