Why must there be plot, writing-brain? Can't we just have carefree sexytimes? 
The unlikely but inevitable collaboration continues!
Original Custom Adventure [mostly lonelyzentai with occasional guidance from yours truly]
Chapter 1: The Mansion - Statue [Chapter 1]
Chapter 2: The Mansion - Statue [Chapter 2]
Chapter 3: The Mansion - Statue [Chapter 3]
Spin-off Sequel... thing..?
Pre-Sequel Part 1: The Mansion - Statue [The Pre-sequel] (lonelyzentai)
Pre-Sequel Part 2: The Mansion - Statue [The Pre-sequel - Part 2] (Me)
Pre-Sequel Part 3: The Mansion - Statue [The Pre-sequel - Part 3] (lonelyzentai)
Pre-Sequel Part 4: The Mansion - Statue [The Pre-sequel - Part 4] (Me)
Pre-Sequel Part 5: The Mansion - Statue [The Pre-sequel - Part 5] (lonelyzentai)
Pre-Sequel Part 6: The Mansion - Statue [The Pre-sequel - Part 6] (Me)
Pre-Sequel Part 7: The Mansion - Statue [The Pre-sequel - Part 7] (lonelyzentai)
Pre-Sequel Part 8: The Mansion - Statue [The Pre-sequel - Part 8] (Me)