The Tower

This must be the Tower from "Swan Meat". 

I don't think it looks like a Castle. 

This Tower was where Sergei the insectivorous Creature Child 

running up the Stairs 

in order to escape from the wicked black Stuff. 

The Tower was very tall 

and there was an House leaned to the right. 

There was Sergei on the Roof of the Tower right next to the Chimney 

and there was a black Stuff changed into a Cobra Form to strike Sergei. 

The black Stuff wants to eat Sergei by changing into a Cobra Form and the final Form like the Demon Monster.