i have sat in battle with tentacles for over an hour and it hasn't given me futa i know that it comes from tentacles but i forget how / what conditions need to be met in order for it to work

first enable Futanari setting and disable skip sex animation using the Key item in inventory, Then wait for tentacles to use the implantation attack. Using horny debuff might increase the chance.

How do I activate the futa mod? I can't find it anywhere—not in the options or the inventory.