Ano Danchi no Tsuma-tachi wa... The Animation

Based on the CG collection by Vadass. An apartment complex that’s just chock full of woman who desperately want to do it! How could you want to bang in such a place!?? It’s because perverted customs are practiced in this make-shift whorehouse. The male clientele really get off on banging these housewives while their husbands are out of the house. (Source: Getchu, translated)

Dropout

In a school foundation there are creating new ways of learning to improve student achievement. That is for those who get a small score and fail the exam will be in the Drop Out (DO) and made sex slaves for impingement lust. And for those who get high achievement will be served free sex in a special lesson.

Baku Ane: Otouto Shibocchau zo! THE ANIMATION

Based on the erotic game by Atelier Kaguya Bare & Bunny. The protagonist is a famous soccer player, but due to a leg injury from a game, he must now rest until it heals. When he returns home, he is warmly greeted by his 4 older sisters whom he hasn't seen for a long time. However, because his clubmates have play a prank on him and fill his bag with ero manga, their relationships immediately plummet after they find out about it. While trying to explain the situation to no avail, one of them suggests that they themselves should help him escape the 2D world and be interested in healthy adult women. Little does he know, all of his sisters love him more than a brother. And so, this is the beginning of a ridiculous erotic life between our protagonist and his 4 tempting older sisters. (Source: Official Site) Note: A director's cut edition was released 2017/09/29 with additional scenes added.</i>