omorashi but it’s a human and an immortal and the immortal lives with the human. the immortal doesn’t understand bodily functions so they accidentally push the human to his limits and finally figures out that humans have to expel the liquid that they drink and can’t just make it disappear like immortals can.
omorashi scenes include:
the immortal accidentally opening the bathroom door and catching the human going to the toilet.
the immortal giving the human too much liquid and being oblivious that he needs a break.
the immortal testing something by making the toilet seats stuck down to see if the human would have an accident or push him to his limit.
just a thought.












