There are 6 series of Baki. This is the sixth one. 1-Baki the Grappler (1991 – 1999) 42 volumes 2-New Grappler Baki (1999 – 2005) 31 volumes 3-Hanma Baki: Son of Ogre (2005 – 2012) 37 volumes 4-Baki-Dou (2014 – 2018) 22 volumes 5-Baki-Dou (2018 – 2023) 17 volumes 6-Baki Rahen (2023 -)