Square Of The Moon: The Night Is Coming!

Over the city of Otsuna, a second moon appears in the sky, and three years later, monsters start crawling out of the dark. Ryou Hamura is just a regular high school kid until one of those creatures corners him and he's basically dead, until a red-eyed girl named Izumi shows up, cuts the thing apart, and disappears like it was nothing. Turns out she's part of a group that's been quietly dealing with these things, and now Ryou is pulled into a world he had no idea existed. The series is a 4-episode OVA from 2002 based on a visual novel, and it leans hard into that late-night horror energy: monstrous creatures, mysterious girls with supernatural abilities, and a city that has no idea what's lurking around it. The early 2000s art style gives it a specific texture that feels genuine rather than dated, and the atmosphere stays consistently unsettling without needing to explain everything upfront. If you've played Persona 3 or Shin Megami Tensei: Devil Survivor and like that blend of everyday life suddenly colliding with something monstrous and mythological, this scratches a similar itch in a much shorter runtime. It also shares some tonal DNA with Tokyo Majin, urban supernatural horror with a dark edge and characters who feel like they're carrying secrets. Short, dense, and genuinely strange in the right ways.