Dara-san of Reiwa Volume 1

Clouds blacken the sky and sheets of rain turn the mountain forest into a treacherous maze…A landslide crushes a razor wire fence and buries a “NO TRESPASSING” sign…As two young siblings venture into a dark world to which they do not belong, a long, horrid shadow rears up to meet them, and— “Look, I’m a malevolent deity, okay?! Aren’t you kids gonna freak out about my monstrous visage?!” Anyway, so that’s how we met Dara-san! She might look kinda scary, but just wait until you get to know her!