Karas ( 鴉 -KARAS- ) The Karas
Type: OVA
Episodes: 6
Year: 2005 (25.03.2005 till ?)
Companies: (Tatsunoko Production)
URL: http://www.thekaras.net/

In Shijuku, near future, consecutive murders occur. The victims were deprived of their body fluid. They know a guy named Eko is the murderer. He used to be “Karas”, a guardian of the town, but before they knew it, he named himself Eko and began to revenge himself on human races.
Yurine is the person who directs Karas to save the town. In order to stop murder, she chooses Otoha as a new Karas. Then, a battle of two Karas begins.

DVD - Karas ep:2 rus/jap
DVD - Karas ep:3 rus/jap sub:eng
====================================================
Gakuen ~Chijoku no Zushiki~ ( 学園～恥辱の図式～ ) Debts of Desire
Genre: Hentai
Type: OVA
Episodes: 2
Year: 2002 (07.06.2002 till 06.09.2002)
Companies: Digital Works, Y.O.U.C, BISHOP ()
URL: http://www.vanilla-jp.com/catalog/gakuen/re_gakuen1.html

Based on a game by BISHOP
Masaki`s in trouble. His rich father is about to disown him! But he`s still got one last chance: if he can collect on some old unpaid debts, then all will be forgiven. Masaki may be a slacker, but he`s quick to realize that the fastest way to collect is to go after the debtors` hot, busty daughters!
And so, Masaki`s "game" begins. The rules? If the girls can`t pay back the debt, they have pay up with all sorts of sexual favors. They`ll have to cater to his every carnal demand, fulfill his every fetish... Masaki may not be collecting much money, but he doesn`t care – he`s surrounded by girls moaning in pleasure and begging for more!

DVD - Debts of Desire ep:1-2 rus/jap/eng sub:eng
====================================================