At 24 years old, Rinko was a working professional who lived by herself while hiding her otaku identity. But her life took an unexpected turn when a hole in the wall connected her apartment to her neighbors'. To her left, a friendly and enigmatic man brought joy into her life. To her right, a rough but familiar presence caught her attention. Despite the disturbance caused by the hole in the wall, Rinko felt a newfound excitement in her daily routine.