Idk

Story ends with old man correcting a young tour guide on the amount of money stolen from a company 

This guy fucks

A shapeshifter that has an underlying power that shapeshifts those that he fucks into a being that can give birth to the same species he is currently shifted into.  The person on the receiving end becomes anthropomorphic and retains their original sex but they may find that they then have a second genitalia.

RNG stamina

Game that the stamina bar changes for the characters each day in regards to sleep.

Anthro World Idea

In this anthro world species does not dictate size.  A mouse could be the size of an elephant while an elephant is the size of a mouse

Mouse horse hybrid

Contrary to popular belief he has a small dick

The Fursona House

A house that sits on the edge of 2 separate realities.  It is said that anyone who stays at the house and has a fursona will become their fursona after 1 full week. During that week that person will only be able to interact with those who have lived in said house before for any indeterminate amount of time.  This can range from 1 hr to 6 of the 7 days.  If a person stops living there before the seven days have passed the house will cease to exist for them for at least a decade.  The house is always located in the same place but those who have left will be unable to perceive it with any senses.  If a person stays in said house for 7 days they will become their fursona (or Zootopia Sona for those idiots) and be transferred to a reality parallel to ours. Those without a fursona will be unaffected and will not see the house unless seen through peripherals.  

Contortionist

So what if i made a character that became a contortionist because they like feet and when they can't have someone else's they contort and act like theirs are someone else's.