Tadaima, Ojamasaremasu!

Rinko is a 24-year-old office worker who lives alone in her apartment. On a random evening, her peaceful routine is disrupted when a mysterious hole opens and connects her apartment to the neighbouring rooms. On her left side lives a guy who is mysterious and kind of cool, while on her right side, there is a guy who looks suspicious. Rinko begins to suspect she knows one of them, and then a thrilling action starts in her life.