"Heavenly Forest" is about a photographer named Makoto, who travels to New York during Christmas to look for his best friend, Shizuru. The two first met when Makoto attended his university entrance ceremony. Makoto tends to shy away from other people but Shizuru managed to make him open up to her. Because of their friendship, Shizuru also ended up taking an interest in photography and the two often went to a forest to take pictures. Shizuru wants nothing else but to be by Makoto's side so when he started liking another girl called Miyuki, Shizuru decided that she too will like Miyuki and becomes her friend. One day, Makoto asked Shizuru what present she'd like to receive for her birthday. Shizuru, who wanted to enter a photography competition, had an idea to take a picture of the two of them kissing in a forest. Makoto agreed to do this and the two kissed for the very first time. Ever since that day, however, Shizuru disappears from Makoto's life.
Makoto encounters the love of his life in the girl called Shizuru. However their relationship turns brief as Makoto discovers that Shizuru's photographic know how, outmatches his own and won some international award. They end up separating with her extracting a promise from dream of becoming a professional photographer. Three years later, the promise still hasn't been fulfilled. All the memories were flash back as Makoto received a letter from New York, sent by Shizuru.
Satoshi Kubo has been dubbed the "God of Death" since he was a child. Whether relatives or friends, as long as they get close to him, they are bound to suffer a catastrophe that is enough to lose their lives. Over time, in order to protect friends and relatives, Satoshi gradually got used to the life of being alone. By chance, Satoshi rescued a girl named Mizuki Sawai. Satoshi's silence and mystery gradually attracted the strange personality Mizuki, who launched a fierce attack on her. In order to protect Mizuki, Satoshi decided to hide his throbbing feelings. However, Mizuki's bravery and perseverance allowed Satoshi to finally accept this dangerous feeling. He hoped that true love could break the curse on him. The good times didn't last long, Mizuki contracted cancer and eventually died in pain. Satoshi could no longer find a reason to continue living, he decided to end his life.
Miyu and Shuya are high school students. They have dated for 2 years. Miyu and Shuya have a promise that no matter what, they will watch a movie together on the first day of each new month. When Miyu and Shuya are on their way to the movie theater, Shuya suddenly cancels their date. Shuya seems like he is hiding something and he acts nervous. Later, Miyu goes to the place where she is supposed to meet Shuya, but she witnesses Shuya getting into a car accident. She panics, but when she wakes up she finds herself on the morning of the accident. Miyu keeps waking up on the day when Shuya got into an accident.
