If only my brother hadn’t existed — my life would have been a little better…” Kyoji Kato is busy with part-time work and lives a gloomy life. He has an unshakable inferiority complex towards his older brother Kyoichiro, who took over from their late father and is active overseas as a genius doctor. One night, he gets a phone call from his mother. “My brother…Kyoichiro has died.” Kyoji, who was in a daze after suddenly losing someone important to him, was cleaning up his brother’s room when he suddenly had a seizure and lost consciousness. He wakes up to find out 11 years ago. In the midst of the confusion, his brother appears in front of him in his younger days, confronting the hospital director, Otomo. “You killed my father!!” With those words, he has another seizure and is pulled back to the present. — Carrying the memories of his brother. The shadow of Otomo appears behind the deaths of his father and brother. In order to uncover the truth, Kyoji aspires to become a doctor. The gears of memory and revenge begin to turn. The past and present intertwine, and a tale of memory inheritance and revenge begins now!