Tomoko, istri dari Kenichi, meninggal saat berumur 30 tahun di tahun ketiga pernikahan mereka. Kenichi memutuskan untuk membesarkan putrinya Miki sendirian. Orang tua Tomoko menyarankan Kenichi untuk menikah lagi, namun mereka juga ingin tetap dekat dengan cucunya, Miki. Kenichi khawatir apakah ia harus menikah lagi demi putrinya, namun tidak bisa mengambil langkah itu ketika ia memikirkan perasaan mertuanya. Ia mengabdikan hidupnya untuk putrinya, namun waktu semakin berjalan dan ia bertemu dengan seseorang. Kenichi’s wife Tomoko died when she was only 30 years old, in the third year of their marriage, and he decided to bring up their daughter Miki on his own. Although they advise Kenichi to marry again, Tomoko’s parents have mixed feelings as they want to keep their granddaughter Miki close. Kenichi worries about whether he ought to remarry for his daughter’s sake, but can’t take that step when he thinks about how his parents-in-law would feel. He devotes his life to his daughter, but time passes and he meets someone.