After being married for two years, she was living a happy but ordinary life... until that person reappeared in front of her again after seventeen long years apart. When we finally reunited, I found out that Daito had become a single mother during those years. She was my first time, too.

結婚して2年。平凡だけど幸せな生活を送っていた…そう…あの人が再び僕の前に現れるまでは…17年振りに再会した瞳さんはシングルマザーになっていた。瞳さんは僕の初めての人だ。