A temporada 1 de JIN foi transmitida em Tokyo Broadcasting System de dimanche 11 octobre 2009 para dimanche 20 décembre 2009. Consiste em 11 episódios, o primeiro chama-se "The Touching Story of Love and Life Beyond Time and Space" e o último "The End of Time Slip... The Story that Goes Beyond Time-Space is Now! "..
The story follows a brain surgeon named, Minakata Jin, who has spent the last two years in anguish, as his fiancee lies in a vegetative state after an operation he performed. One day, he faints at the hospital and awakens to find himself transported back in time to the Edo period. He is soon attacked by a samurai, but he escapes with the help of a man named Kyotaro. Kyotaro suffers a serious injury to the head while trying to protect him, but Jin manages to save his life despite a lack of proper medical equipment. Because of that, Kyotaro's sister Saki begins taking an interest in Jin and becomes his assistant. Meanwhile, Jin is determined to find a way back to the present.