An adaption of the visual novel Koshotengai no Hashihime (古書店街の橋姫) or Hashihime of the Old Book Town. Each chapter is an oneshot, featuring both gen and pairing stories.

Lost in space, Mizuki encounters a strange being that takes the form of her deceased parents. Feeling lonely after so long, she gets attached to this thing that happens to look like her parents.

[Insecure Younger Top x Psycho Pretty Bottom] Following the abrupt loss of his family, Yu Haemin suddenly develops a hearing impairment, making him unable to play the piano and ultimately leading him to give up on going to college. While listening to someone's unfinished track found on an old laptop, Haemin hears a scream from the apartment above. Drawn upstairs, he ends up saving Shin Jaeyeon, who was in the middle of being physically assaulted. As the two slowly grow closer after the incident, they realize just how similar their obsession with music and sudden death of their parents are, sparking an inexplicable mutual attraction…