"Every morning, I'll be the one to wake you, Mizu." So her beloved Kairi had promised, until a plane crash 3 months after their wedding took him away from her forever. Now a widow, but unable to accept her husband's death, Mizuki Mizusawa deliberately moves closer to the ocean and starts a job in a brand-new place. That same day, she unexpectedly encounters a college student named Kaoru Suoh, who is the spitting image of a young Kairi. The first time they meet, Kaoru calls her "Mizu," which is just what her husband Kairi used to call her...! Though this enigmatic and handsome college student Kaoru may be playing with her heart, Mizuki finds herself drawn to him... A story of the romance between two people devoted to love despite their heartbreak. 「毎朝、俺がみづを起こしてやるよ」そう言ってた最愛の人、浬（かいり）は結婚3ヵ月で飛行機事故で帰らぬ人となる。未亡人となった水沢未月は彼の死を受け止める為、敢えて海の近くへと引っ越し、新たな場所で働き始めたある日のこと。突然、浬の若い頃にそっくりな大学生・蘇芳馨が現れる。初対面の馨から出た言葉は「みづ…！」何故か夫の浬と同じ呼び方を…！未月はミステリアスなイケメン大学生・馨に翻弄されながらも魅かれていく…切なくも愛おしい2人の恋愛ストーリー。