Sugimura is a male student of first yesr of Sainan Hig School. He is large and tall, and the one who belongs to Venus Momo Club, and informed Nakajima about Rito.
He often accompanies with Nakajima in order to restrain Nakajima's rampage caused by imagination and considered as Nakajima's aide.
But the members of Venus Momo Club including Nakajima, do the same thing as Nakajima indiscreetly imagines about Momo.
He seems to be friends with Nakajima, as he goes to summer festival with Nakajima even if the Venus Momo Club doesn't take part.
He is voiced by Junichi Yanagida in anime.