The original Boku Dake Ga Inai Machi manga ran from 2012 – 2016 in Young Ace, and was also released in Japan in 8 collected volumes.
Now the new series, entitled Boku Ga Inai Machi: Re, has begun and the premise has been revealed: the story takes place while the main character, Satoru Fujinuma, is still unconscious in a coma that ultimately lasts for 15 years.
The focus of the story shifts to Kayo Hinazuki, who is now a junior high school student.