The official subsite for Naoto Kumazawa's Oyayubi sagashi is now online, although at present it's just a home page.
As was previously reported here on ScreenAnarchy, the screenplay for Oyayubi sagashi was written by Kumazawa, based on the eponymous novel by Yûsuke Yamada. The movie's principal cast apparently is as follows: Ken Miyake, Ayumi Itô, Ken'ichi Matsuyama, Luna Nagai (a.k.a. Runa Nagai), Hiroyuki Onoue, Tôru Shinagawa, Shihô Harumi, Ayumu Saitô, Shirô Sano, and Satomi Tezuka (Teduka Satomi).
Xanadeux K.K. (K.K. Zanadû) plans to release Oyayubi sagashi theatrically in Japan later this year.
Kumazawa's previous directing credits include Niraikanai kara no tegami and The Security Women Affair (Nikutai keibiin: sakareta seifuku).
Other movies based on works by Yamada include Yoshihiro Nakamura's Asoko no seki (eponymous novel), Nakamura's @babymail (@beibîmêru - eponymous novel), and Yôhei Takahashi's 8.1 (a.k.a. "Hatten'ichi" - eponymous novella).
Oyayubi sagashi official subsite
Niraikanai kara no tegami official subsite (w/ trailer)
The Security Women Affair official webpage (viewer discretion is advised)
8.1 theatrical trailer (streaming Windows Media)
8.1 teaser trailer (streaming Windows Media)
8.1 official website
Yamada World (w/ trailers for Asoko no seki & @babymail)