You were in the sorrowful section of King X's Fortresss and you saw a Something swimming in the pond, It started to rain and it got out, It looks like cross between a Hedgehog and a Swamp Monster, He always has his eye closed with black tears coming from his eyelids and he could still see with no problems

"Welcome to the fortress, I am the guardian of gloom, Kuragari, I Submerge those who refuse to follow the rules of King X or worse...Hope you follow the rules or else"