The fear of germs has driven unemployed Kengo into total isolation. However, he dedicates himself passionately to programming digital viruses. Kengo's life changes abruptly when a mysterious stranger appears at his door, threatening to expose him unless he can find a way to connect with school truant Sanagi. But the 17-year-old suffers from social phobia and has a keen interest in insects. Against all odds, Kengo and Sanagi grow close—closer than is good for them. Volume 2 of the series.