I should elaborate a bit.
I"s is based on the manga of the same name. It was written/drawn by Katsura Masakazu, who also made Video Girl Ai, and DNA[squared]
I"s tells a story of love triangle between the main character, Itchitaka, his childhood friend Itsuki, and his classmate Iori Yoshizuki. If you look at their names it all starts with 'I', hence the title I"s
Fron the website, the first OVA episode is already on sale on DVD Japan. While the fansub took 3 days since the release. You can find it here. It won't last very long so better hurry!
http://expert.ics.purdue.edu/~klockowg/ah/