Yakata Miki, a former pop idol, was diagnosed with breast cancer in 2018. After surgery to remove her left breast, Miki kept a video diary to record her treatment and daily thoughts, even touching on delicate themes such as breast reconstruction and pregnancy. Her self-portrait has evoked a massive response among cancer patients nationwide. Miki's diary records 2 years in her life as she started training to become a voice actor, her lifelong dream, while continuing with the treatment to prevent a recurrence of the cancer.