1.836 out of 5 from 422 votes
Aaaah, the good old ecchi, bordering on hentai anime that straddle the line between disgusting and illegal, 'tis indeed a most dark corner of the anime world.
If you enjoy tits of all kinds, naked loli's, that weird hand-clapping sound that's meant to be breasts jiggling, rape, animated orgasms, girls wearing shamefully revealing attire in public, loads of groaning and moaning and the crowd pleasing incest then you should be ashamed of yourself. But luckily these two OVA's should please the fluids right out of you.
I actually had a hard time deciding which one is the tamer of the two. Rescue Me! features cumshots, child-bearing incestual fantasies and male-female sex scenes. Even if the sex scenes are censored it doesn't detract from the fact they exist. It's also fairly heavy on the harem factor.
Kagaku na Yatsura on the other hand throws hardcore incest our way, and the pukeworthy staple of the hentai genre, tentacle rape. Plenty of milk shooting out from certain parts of the female anatomy as well, just for good measure.
So i guess the more hardcore would be Yatsura, but chances are a fan of one will enjoy the other. Now excuse me while i'm off to take a shower to wash away the shame these OVA's brought me.