Is it safe for my pp to stay hard for this long? I'm worried.

Pros:
+ My little sister is adorable!
+ Game is actually pretty fun
+ I love my little sister!
+ Most I've ever fapped to a game
+ Little sister!
+ I came a lot
+ Sister!

Cons:
- I'm no longer interested in femboys, I only want sister now
- I want to eat sister's ass until she ♥♥♥♥