I thoroughly enjoyed this one.
The characters are so well defined; there's at least a dozen different tiny details that paints a very vivid picture of Sarah and her life, a lot of which I related heavily to (and here I was thinking I was the only person who had to look at their wood block name on their childhood bedroom wall every day until they moved out)!
The story makes full use of its 30k word count and does not waste any space. I loved the hot and cold dynamic of Sarah and Graye and it was paced perfectly to make the final twist of the knife at the climax even more brutal.
I love fictional anime discourse.