Two years into her marriage, housewife Kanon appears content with her life—yet one persistent source of distress lingers. Her brother-in-law, who lives in the same compound-style home, unsettles her deeply. Unemployed and only showing up when he's hungry, his sudden appearances make her increasingly uncomfortable. His presence alone has left emotional scars. But Kanon harbors a secret she can't confess to her husband: during her student days, she briefly engaged in paid dating out of impulse. That past resurfaced when explicit content from that time leaked online—and was discovered by her idle, ever-curious brother-in-law. Now, buried darkness begins to stir once more.