Rinko's worst nightmare is also her best setup. An otaku's sacred sanctuary gets invaded through literal holes in the wall, and now she's trapped between two guys who both know something about her she doesn't know about herself. The comedy lives in that collision: her panicked energy against their mysterious sweetness and violence, all of it happening in the cramped domestic space where she thought she was safe.

Rinko is a 24-year-old office worker who lives alone and keeps her otaku side a secret. Her quiet life is upended when a hole in the wall suddenly links her apartment to the two rooms next door. On the left lives a fresh-faced, mysterious young man who is almost too sweet to her. On the right is a man with a violent streak who is just as mysterious, and Rinko has a feeling she already knows him. With the one place she could be alone turned upside down, each day brings a fresh round of surprises. The show is a romantic slice-of-life comedy.