I've read a whole bunch. I've lost track actually..
Back in the brief period when I was studying Japanese I got kind of obsessed with Izumi Koyka, who was mostly a playwright but also wrote novels and short stories. Only a few of his short stories are published in English, but they really resonated with me and I wrote several essays on them. I also had a thing for Yukio Mishima for a while, which retrospectively makes me uncomfortable. I think in the past I was able to draw a distinction between the romanticisation of fascist themes and actually being a fascist which I don't think I could do now.
Modern Japanese literature generally doesn't do it for me. I think Haruki Murakami is great when he's writing short stories, but his novels are hugely overrated.
Actually, if you're into Japanese literature generally, one person you absolutely should read is Kenji Nakagami. I feel like he gets overshadowed in foreign language circles by the fact that he's Burakumin, to the point that it kind of overshadows his universal appeal as a writer. Like, he writes about stuff which is very grim and in some ways very atypical of Japanese writing, and he clearly hated the Japanese literary establishment, but the obsession with the fact that he's Burakumin and attempts to tie everything back to that kind of illustrates to me that the people who tend to read (or rather, who get paid to talk about) Japanese literature live very sheltered lives.
