主人公・逢原雨は、悲しい過去から自分に自信が持てず、人に心を開けないでいました。しかし、故郷・長崎に戻ったある日、かつてただ一人心を通わせ、今もなお忘れられない男性、朝野太陽と再会します。しかし、再会を喜んだのもつかの間、彼は事故に遭ってしまい…。悲しみに暮れる雨の前に、あの世からの“案内人”と名乗る男が現れてこう告げます。「君が“心を差し出す”ならば、今から奇跡を起こしてあげよう」。しかし、案内人が提示した“心を差し出す”という条件は、雨にとって、あまりにも過酷なものでした…。果たして、“奇跡”と引き替えに雨が奪われる“心”とは、何を意味するのでしょうか？そして、案内人が起こす“奇跡”によって、２人に何が起こるのでしょう？一途（いちず）に互いを想い合う雨と太陽、真逆の名前を持つ２人が織りなす、この冬一番ピュアなラブストーリーが幕を開けます。

When Aihara Ame was a high school student in Nagasaki, she wasn’t confident in herself due to her past. Asano Taiyo was a student attending the same school as Aihara Ame. He was the only person who talked to her brightly. With him, she was able to see her life positively for the first time in her life. She had feelings for him. After her graduation, she went to Tokyo to fulfill her dream of becoming a patissier without telling Asano Taiyo about her feelings for him.After 8 years, she returns to Nagasaki. One day, she meets Asano Taiyo, whom she has never forgotten, and is elated to see him again. An accident soon occurs, and Aihara Ame falls into deep despair. A man appears in front of her and introduces himself as a guide from the afterlife. He tells her that if she gives her heart to him, he will make a miracle for her.