Oh I think I might have explained it wrong, you need any Parasite Beast scene to play 3 times in order to unlock the Doghouse. It can be any Parasite Beast scene.
There are at least 3 scenes that work:
- Low lewdness (forced, lewdness < 3)
- High lewdness (consensual, lewdness >= 3)
- Temptation (using Seduce action with Libido Ring, 40% lust and lewdness >= 3)
So even playing the same 3 times should work.