#38 of 2D Game Novels. This is the 3rd book from "Princess Lover!" series featuring the daughter from the protagonist's rival family, the first 2 can be found:

Vol.1 (#33, feat. Sylvia van Hossen)
Vol.2 (#35, feat. Charlotte Hazelrink)

There's no news about her OVA atm, however, the second chapter of OVA (feat. Charlotte Hazelrink) is planned to be out this summer according to BugBug 2013 March issue. Bad news, there's no more update since then and the official site for the anime company still shows their 2011 page.

info on mugi:
http://doujinshi.mugimugi.org/book/598095/

physical ver:
http://www.amazon.co.jp/gp/product/4860328426/

Contents:

007 - Color Illustration
008~021 - Gallery preview (these are illustrations scanned with alternative filter, you may choose which set to keep.)
023 - Characters

025 - 第一幕 新学期、そして始まる新たな関係
068 - 第二幕 だって、家族になるんだもの
145 - 第三幕 追い込まれるほど、燃えてくる
213 - 第四幕 約束の日、僕らは結ばれる

Base +15

"There's no news about her OVA atm, however, the second chapter of OVA (feat. Charlotte Hazelrink) is planned to be out this summer according to BugBug 2013 March issue. Bad news, there's no more update since then and the official site for the anime company still shows their 2011 page."

It's not so rare for them to update their page 1-2 time per year -_-. Sora No Mizu series was released with a gap of 4-5 years between the 1st and 2nd OVA. Anyway, thanks for news :].

Base +20, FlankerX +6