Hina Nemoto is one of Tomoko's classmates who actually got her sense of humor from day one—she was literally the only person who laughed at Tomoko's weird introduction in their first year. That alone says something about her.
Within her friend group, Hina's known for being the one everyone teases about having basically no presence. Her friends are constantly giving her grief about it, suggesting she's somehow less noticeable than the rest of them. It's become kind of a running joke, though whether she minds it or finds it funny herself isn't always clear.
Content compiled by AnimeList.moe from publicly available sources.
