Where can I watch "Heavenly Forest" (2006) / ただ、君を愛してる?

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Hi everyone! I've been really wanting to watch Heavenly Forest (2006), directed by Takehiko Shinjo.

I haven't been able to find it on any major streaming platforms in my region. Does anyone know if there's an official platform hosting it, or where I might be able to stream/find it with English subtitles?

Thanks in advance!