Sorry, I realised in my enthusiasm that I forgot some other studios that a lot in Bukkake, Sperm Play & Sperm Drinking / Swallowing in their catalogs.

Milky-Princess - Most all of the girls are young looking & dressed in Japanese school uniform or the traditional one piece swim suit that Japanese school girls use.

Dream Ticket - This studio does the Gothic Lolita Dolls series of movies , but also have a lot of movies were the girls are dressed in a more sophisticated way and play a Teacher or Office Lady.

Shuttle Japan - Don't know how I forgot this studio, they were about the first Bukkake movies I ever watched. I don't think this studio does anything but Bukkake / Sperm drinking movies. These movies are were the girl will take 90, or 100, or ever more sperm shots ... & drink the lot. Not my favourite studio, because a lot of the girls just don't seem happy about the whole thing, but they still do some classic stuff.

Dogma - This studio does some of the best stuff available I think. Watched a few of their movies and haven't been disappointed yet.