The first 2 had women.......eating semen (wtf?)......does that taste good to them or something? Other than that, pretty damn good!
...you write fanfiction and don't know all about the hentai semen connection...PORN MOTHERFUCKER DO YOU WATCH IT!?
Semen is the popular target of many a fetish, including...facials, cumshots, etc. In the case of these movies a healthy dose of both is presented.
A lot of women hate the taste of sperm, honestly, but some do enjoy it, it's more of a sexual thing than a taste thing, but eventually people with fetishes tend to enjoy whatever they're infatuated with. There are a lot of websites and such with live action forms of this sort of thing. For the most extreme, Bukkake is the holy grail of cumshots, with upwards of 100 men spooging on a single girl.
In essence, some enjoy it, some don't, some enjoy eating it, some enjoy being covered in it, some hate it entirely, some put it on cereal and devour accordingly.
I hope my description was salty and enjoyable.