Tada, kimi wo aishiteru - Japanese Title
Translations: 
Just, I Love You
Loving You, Just So
Just Loving You
Heavenly Forest - International: English Title
  
http://www.imdb.com/title/tt0872022/  
http://www.aishiteru.jp/

Director: Takehiko Shinjo
Cast: 
Aoi Miyazaki - Shizuru Satonaka
Hiroshi Tamaki - Makoto Segawa
Meisa Kuroki - Miyuki Toyama
Misa Uehara - Saki Inoue
Munetaka Aoki - Ryo Shirohama
Keisuke Koide - Kyohei Sekiguchi
Asae Oonishi - Yuka Yaguchi 

Theme song: Renai Shashin (Love Photograph) by Ai Otsuka

Year: 2006
Audio: Japanese, Cantonese
Subtitles: Traditional Chinese, English
Runtime: 116 min
Resolution: 720 x 480
Aspect Ratio: 16 : 9
Frame rate: 30 frames per second
Channels: Surround 5.1

This is known as one of the very best romance movies of all time. 

Description: A shy amateur photographer Makoto (Tamaki Hiroshi) and endearing Shizuru (Miyazaki Aoi) meet each other at university. The two often go to a forest together to take photographs. Shizuru secretly loves Makoto, but he only has eyes for another girl. After Shuizuru asks Makoto to kiss her in the forest to create the perfect picture, Shizuru disappears!