Kansen 2: Inzai Toshi

Main Title: Kansen 2: Inzai Toshi
Official Title: 姦染2 淫罪都市
Synonym: Infection 2: City of Sin, Kansen 2 Inzai Toushi, 감염2 음죄도시
Type: OVA, 2 episodes
Year: 26.02.2010 until 25.06.2010
Season: Winter 2009/10
Original Work: Speed
Direction: Yokoyama Hitomi
Character Design: Kinohara Hikaru
Animation Work: Suzuki Mirano

One day a couple of students wake up inside a wrecked school bus, then they discover that their city is in ruins and some people wanders with some weird looks. They found that there is a virus that makes people have insane sexual desire and they wont think on nothing else, and that virus is transmitted via sex so they must save their companions before they fall for that virus or even them will lose their will.