Miyabi was once a promising neurosurgeon, but an accident a year and a half ago left her with memory loss. She can’t remember the past two years, and everything she experiences in a day disappears by the next. Now limited to assisting nurses, she’s barred from performing any medical procedures. Still, Miyabi refuses to give up. She records every detail of her day in a diary and reviews it each morning to rebuild her memory, determined to live each day with positivity.

Just as she begins to lose hope, Tomoharu Sanpei—a brilliant but arrogant neurosurgeon recently returned from the U.S.—enters her life. Despite his difficult personality, he pushes Miyabi back into the operating room. Her return sparks concern, but Miyabi chooses to face the challenge. As she reconnects with her role, questions arise about the two years she lost. What secrets lie in her missing memories? And what does she truly feel?

This is the story of a neurosurgeon rebuilding her life, unaware of the secrets buried in her forgotten past.