There's something hiding in these holes in FF3

https://preview.redd.it/dqp4bv42opoe1.png?width=1920&format=png&auto=webp&s=9da754b8b9a583d076004960bd703ec735165d5a

If you look closely at the walls in the room with the blue house (thumbnail) you can see traces of a strange substance, most likely blood. Any other ideas?