Yokai Hunters Society is a light RPG by Chema González, based on Tunnel Goons by Nate Treme. I picked it up on a whim about two years ago because the premise looked cool and the print on demand version is very affordable (as is the PDF edition, which you can get from https://punkpadour.itch.io/yokai-hunter). It sat on my shelf before last year when I had a chance to run a Halloween one shot for my usual RPG party plus one more player who was entirely new to tabletop RPGs. I figured this very simple system would be a great way to play something on Halloween without it being overly taxing.