Aoki Daisuke lands his first teaching job at an elementary school, only to discover that connecting with nine-year-olds is far harder than he anticipated. His class treats him with indifference until one moment of genuine kindness changes everything. Rin Kokonoe, one of his students, decides right then that she's going to make her new teacher fall for her. What starts as childish infatuation quickly becomes something more complex, forcing Aoki to navigate a situation that challenges every professional boundary he has. Rin's persistence isn't simple puppy love, and her behavior hints at deeper issues nobody else seems to notice. As Aoki tries to keep things appropriate while actually reaching his students, he realizes that understanding Rin means uncovering why a third grader is so determined to seduce her teacher in the first place. The series balances awkward comedy with genuine emotional stakes, examining what happens when an adult finally pays real attention to a child who desperately needs it. It's uncomfortable and sincere in equal measure, refusing easy answers about how these relationships actually work.