The day Monster kind was sealed into Mt. Ebott, the mages added a little extra insurance. A curse.
Human SOULS may pass. But Human forms may not.
Young Frisk must navigate the dangers under the mountain, a little less human than before...
Yup! I have been doing little tributes to horror movie monster designs and tropes here and there in the comic!
For example, I made an homage to the Ju-On with Blooky's first introduction much earlier in the comic. I'm a big fan of horror monsters so I'll be adding more as the story goes.