There is cum. Also, if you cum on the floor and then do the minigame you can still see it there
Just download again and replayed, there is...so I am wrong, apparently.
I think the reason I assume there is no cum is because 1) Older version, or 2) That is not cum, that is sweat...from dickhole.
The guy is a 2 meter tall Orc, and he cums less than the average hentai protagonist, so I just kinda assume.
Plus it is not universal anyway, some positions (or characters) doesn't have any at all.
Edit: There are buckets more cum in the sex demo than the main game...what the fuck?
Either I turn the probably non-existence "Show cum" button off, or I am just fucking off my meds.