Postcard, Article, and Gift Placards. // Source: scanned by me.
The gift placards shown above were both drawn by Yuka Kudo, the character designer for the anime series.

Cross-Reference: Animedia Illustration Collection volume 01 (textless!).

OAV News. // Source: scanned by me.
A small news article about the upcoming OAV series.

Image Cross-Reference: Newtype Romance Summer 2007, Character Designs, and a promotional poster.

OAV promo image. // Source: Screenshot of Maruma-OAV.jp.
The main promotional image for the OAV series, here for comparison.

Image Cross-Reference: Newtype Romance Summer 2007, and a promotional poster.

OAV promo image. // Source: screenshot of Presepe OAV site.
Another screenshot of the main OAV promotional image.

Image Cross-Reference: Newtype Romance Summer 2007, and a promotional poster.

Gift Placard and Anime Dojo Reprint. // Source: scanned by me.
The October 2007 issue of Animedia magazine came with a book that reprints all of its previous "Anime Dojo" features, in which famous character designers talk about their work. The above pages are a reprint of the Yuka Kudo feature from the April 2005 issue of Animedia, as well as a scan of a gift placard illustrated by Kudo.

Image Cross-Reference: Animedia April 2005, of course.

OAV Promotional Advertisement. // Source: scanned by me.
Note: A small PS2 game-related article, also from this issue of Animedia, is located in the PS2 game gallery.

Image Cross-Reference: OAV Volume 01 DVD cover and packaging scans.

Poster and Article. // Source: scanned by me.

Image Cross-Reference: Character Designs.