I think I have done most of the content but I am missing a very important scene that I can't trigger; I am 3/3 on the "enslavement" by Mistress Cobra but I saw that there was a scene to become her "true slave", the video is everywhere but I don't see how to trigger this phase.
I made more than 2000g and the equivalent of 20 levels of tributes, I saw all the CGs several times, and this part is not specified in the guide on the first page... I don't understand how you become her true slave, can I please get some help?