Once the greatest hitman of all, Taro Sakamoto retired in the name of love. But when his past catches up, he must fight to protect his beloved family.

It's the ultimate showdown. The toughest fighters from "Baki Hanma" and "Kengan Ashura" clash in this unprecedented, hard-hitting martial arts crossover.

"That's a hassle." That was second-year high schooler Nagi Seishirou's favorite phrase as he lived his dull life. Until Mikage Reo, a classmate who dreamed of winning the World Cup, discovered ...