Ura Jutaijima

There's not many similarities between the two, but if you look at the cover of the first episode of both of these OVAs, you'll see that both feature a tomboyish girl with short hair and tanlines, if you know about the excellency that that emanates you'll agree that the recommendation of both is justified. Have in consideration though, Bokura No Sex is made by Queen Bee and you know what that means. 

The whole female cast must obtain the semen of the protagonist at any cost, in Ura Jutaijima because of a mortal virus, in Youkoso! Sukebe Elf No Mori E to save the female elves from extinction, however none of it's differences make the similarities of these two disappear, both are made by the same studio, which means similar visual and artistic aspect everywhere, there's also the fact that Youkoso! Has dark skin cuties in the form of dark elves, which translates to gyaru form into tanned gyarus, and oh surprise, Ura Jutaijima has lots of greatness in that aspect. They're very alike, so most probably you'll enjoy both. read more 

Ura Jutaijima is a sort of sequel, but it's more related than the first version because there's two characters with a beautiful tan and one happens to be a slutty gyaru, which JK Bitch No Shiboraretai has by heaps, even one is pretty similar to the gyaru in Ura Jutaijima, with a thick tan and probably dyed hair, besides that both are made by the same people, which means animation and artstyle alike as well. 

There's not much of similar between the two, besides that both have a character which is the tanned, blonde dyed, skimpy outfits wearing and slutty gyaru, the likeness is obvious from the cover of both alone, there's other girl in both which is in the more young looking side, well also that all the girls involved are joshikosei, that is highschoolers, but that's all. 

Both are adaptations of visual novels about a guy that must have sex with the female cast, all from school, in order to survive, in Euphoria it's thanks to a macabre game like in Saw and Jutaijima involves a mortal virus which makes the girls crave semen or else they'll die, there's technically deaths in both, but in Jutaijima isn't shown anything since it's not the point of interest, it's more of the harem vanilla type, but both are recommended. 

Tomboy or gyaru, by two-piece swimsuit or by scholar swimsuit, doesn't matter, there's two characters in each of these hentai with tanlines, that's all you need to know, well there's also sun beaches in both of these and there's only one guy involved in the sex scenes making them both harem, so there's that too, and furthermore, there's a girl with very young looks in both. Ok, now that's all. 

Mika and Megumi are very similar, if I was talking about most kind of girls that wouldn't matter much, but they're the tomboy type with tan lines, that alone should be enough to pick anyone's interested, as it should, there's also other similar girls, but honestly the parallel between Mika and Megumi is the most important one, there's also an island and scenes at the beach with also some swimsuits involved I guess, but look! Tan lines! ☞