A variety of sperm-harvesting sleeve-like creatures has popped up near a local lake, and it is your job to determine the differences between them. The lab conditions you are in are designed so you know nothing before you lift the box and begin to allow the creature within to pleasurably feed from your length. This is the first of the files in this series, but not the last. I won't spoil the special sensations this particular variety causes. Just the induction on its own is available as well, and could be used with any sleeve creature or sperm-harvesting entity track.