Kekkonshiki no Zenjitsu ni.

Hitomi Ashizawa works at a real estate corporation as a team leader. She is engaged to physician. On the 100th day before the wedding, Hitomi Ashizawa is diagnosed with a brain tumor. Her mother appears even though they have not seen each other for the past 28 years. Her mothers with her bright personality offers Hitomi encouragement and she tries to live positively.