I enjoyed reading this manga; however the storyline is pretty simple. I enjoyed the art style and the design of Kiriko the most out of the manga, especially how her form evolves throughout the story. I still was not able to identify if Kiriko is really a monster, or maybe a very realistic illusion formed from the feeling of guilt. But I don't think that this is a flaw, more like something that makes the story more psychologically interesting. The characters are not very memorable and pretty mediocre but they are understandably this is a short manga so not much backstory could be provided, itwas more focused on the plot. However I really enjoyed the small twist near the end.