Hasunuma is a teacher from Komaki's school. Since the start he shows to have a weird behaviour and to be aware of many secrets. With students he appears as a good teacher, the one that jokes with them and that "closes an eye" whenever see one of them doing some little forbidden things in school, due to this reason seems to be appreciated and loved by them. He joins the story as supportive character but he later becomes one of the main as well, since his part in the plot will grow of importance.
While things become dangerous he's always the one in the dark to be ready to fix them, at least with our main characters involved with. Hasunuma appears to be mysterious and smart, and soon punish Aoki-sensei when he abused of Kurokawa, by making him litterally "disappear".
It is revelaed that he has abilities like our main charas have, the curious thing is that he seems to have all of the 5 senses as very highly improved. He's shown to have a particoular attention on Ikeno, Kurokawa, Tsurumi and Shijou.
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