The Baki-Dou sequel series launched in Weekly Shōnen Champion in March 2014 as the third sequel to the original Baki The Grappler manga, and it ended in April 2018.
Baki, the sequel manga, ran for 31 volumes in Weekly Shōnen Champion from 1999 to 2005.
Itagaki’s original manga ran for 42 volumes in Weekly Shōnen Champion magazine from 1991 to 1999.
After the Baki sequel manga finished in 2005, Hanma Baki then ran in the same magazine from 2005 to 2012.