I'm not sure, but you can try to complete Ako's story until you get all of Ako's body modules. If it's still not there, try buying all the books at the store.
Already did... Got all positions plus Alternate 1 and 2. Im guessing that its a future update for the blowjob??... Also, did you unlock any of the galleries? Mine are all locked and I reached the END OF CONTENT message in the house ? symbol
