If you're not specifically talking about contemporary authors, the short stories of Ryunosuke Akutagawa are a must. Penguin Books has a collection that includes

If you're not specifically talking about contemporary authors, the short stories of Ryunosuke Akutagawa are a must. Penguin Books has a collection that includes his best ones, including probably my favorite short story of all, "Hell Screen": https://www.penguin.co.uk/books/35522/rashomon-and-seventeen-other-stories/ https://www.penguin.co.uk/books/35522/rashomon-and-seventeen...