Ichigo no Yume - Shimatsuya Risuke no Kaii Jikenchou

[MangaDex]

 

[Pokari]

If not for the gay men this could pass as a decently classy seinen-demographic historical-fiction piece with supernatural monsters-of-the-week. (Or josei, too, which I suppose it what it effectively is)

I'm not saying the gay men make it not-classy, to be clear, though the couple of sex scenes involving them, might.

_{In other news, I removed the "Zombies" tag because having one chapter's supernatural-shtick-of-the-week be zombies doesn't really merit calling it a theme of the story.}