Seeing “level 25” makes me a bit sceptical that this is a good fit for the ABBC - that’s pretty firmely in BBC territory.
(Sadly, the BBC doesn’t seem to be too fond of books. My nomination of lovely short stories collection is gathering dust at 16-17%…)
edit: I think a short story that might be closer to the ABBC range could be 手ぶくろを買いに | L20.