This article's content is accurate to the most recent public game version, 0.4.8d.
The Bunnygirl Slut Game Over is an ending which occurs if the party loses to any enemy in the Research Base.
The party will be saved, but Olivia will discover Eric(a)'s true gender while healing him. Marianne immediately transforms him into a horny bunny girl, and her mind soon succumbs to her new form. Marianne sends her away to a brothel, lamenting how Eric(a) had "magic potential", deciding to recruit her daughters once she gives birth to them (which won't take long).