Question: is baki ona a sequel?
Answer: Baki is a third anime series, it is based on the first saga of the manga series of Baki, aired from June 25, 2018 to December 16, 2018. The series is an ONA (Original Net Animation). Baki is a fourth anime series, it is based on the second saga of the manga series of Baki, all episodes aired on June 4, 2020.