Dara-San of Reiwa, Vol. 1 - Haruomi Tomotsuka

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!