The official subsite for Ken Suenaga's horror movie Nightingalo (Naichingêro) is online, and there's a trailer for the movie on that site.
Nightingalo stars Chinami Ishizaka, Yumi Egawa, Mami Hashimoto, Hazuki Suzuki (Suzuki Haduki), Misato Hirata, and Rei Yoshii.
Ad Gear K.K. (K.K. Ado Gia) is scheduled to release Nightingalo theatrically in Japan in March.
Those who are interested in Nightingalo may also wish to read this ScreenAnarchy article on Yôichi Nishiyama's Gurozuka (alternative transliteration: Guroduka).
Nightingalo official subsite (w/ trailer - see "Preview")
Gurozuka official subsite