The narrative follows Mizugami Shinji, a high school student consumed by unrequited love for his classmate, Nanami Miku. His world shatters when a rumor spreads that Miku is dating Amemiya Hikaru, a popular, perfect student who excels in academics and sports. Shinji, feeling utterly defeated, avoids Miku and Amemiya, even feigning illness to skip school for a week. Upon his return, he attempts to distance himself further from Miku, telling her it's best they don't speak to avoid misunderstandings.
Meanwhile, Shinji begins receiving persistent, silent calls from an unknown number, which escalate to a barrage of disturbing emails filled with personal information and declarations of love. He suspects the perpetrator is someone he knows, and the harassment intensifies, culminating in his desk being stolen from the classroom and his shoe locker filled with garbage. Miku, despite Shinji's coldness, offers support and helps clean his shoe locker, revealing that Amemiya Hikaru is responsible for the vandalism and the false rumors about her and Shinji. She explains that Amemiya spread the rumors out of spite after she rejected his confession, and that she had told him she liked someone else, specifically Shinji, to deter him.
Shinji is taken to the infirmary after a severe reaction to the stress. There, Miku confesses her true feelings, revealing that she has liked him since elementary school when he defended her from bullies. She admits that she orchestrated the anonymous calls and emails, and even instructed Amemiya to commit the acts of vandalism, all to push Shinji to his emotional limit so she could confess and secure his affection. She also reveals that she reported Amemiya to the school with evidence, leading to his expulsion. Shinji, recalling his past act of kindness, accepts Miku's confession, and they begin dating. The story concludes with Miku's internal monologue, revealing her possessive and manipulative nature, and her satisfaction at having secured Shinji, even resorting to extreme measures to achieve her goal.
