Dr. Kazuo Hasegawa, 90, recently revealed that he is suffering from dementia. A pioneer in dementia research, Dr. Hasegawa had devoted his life to the field, establishing the Hasegawa Dementia Scale for early diagnosis and advocating for changing the name of the disease to eliminate social stigma. How have Dr. Hasegawa and his family come to terms with the reality of a dementia specialist becoming a dementia patient? What insights has he gained? In an age where dementia is becoming more common, this year-long record follows Dr. Hasegawa in his daily life, exploring ways to live with the disease and offering reasons for hope.