Meet the top delinquent from Mars! His name is Ukita Kikuchiyo and he's now trying to take over new turf on Earth after switching schools but due to living in Mars’ low gravity, he quickly finds out he's quite weak. Luckily for him however, after getting beat by a gang, he meets up with Shirokuma Fuuta, a practitioner of Aikido who teaches him the ways provided it’s only for self defense.

Wandering traveler Kurotsuki Yukiji goes from town to town enjoying the women, food, and culture each has to offer. He is the master of the Kurotsuki style martial art where instead of using brute force, it uses the aiki form where you use the opponent’s strength and manipulate their force against them. It focuses on settling the conflict without hurting both sides and harnessing the “bladeless soul.” Yukiji is traveling to perfect this style and trouble usually finds him although going by his outward appearance, he looks like a peace-seeking man. The oneshot was released in issue 20/2012 of Weekly Shounen Jump. The serialization for this series begins from issue 24/2013 of Weekly Shounen Jump.