AIKI

is a Japanese seinen martial arts manga created by Isutoshi. Aiki-S is a seinen manga written and illustrated by Isutoshi, which is the sequel of Aiki.

Aiki
A dispute arises on a local high school due to the absence of the director. The principal is rumored of overtaking control of the school with the help of his daughter. Kizuki, the granddaughter of the director with the help of her two loyal teachers seek to fight the regime but in the process, they need the help of Kunitoshi, a local bad boy. It is later revealed that there never were any plans to take over the school, it was just a cover for Karasumaru to attempt to take control of the world of martial arts.

Aiki-S
After the battles of the first series, Joukyuu has to stay quiet in Japan teaching martial arts. Even with Veronica and Kageyasu close by, it is so sleepy. Then when a chef offers him a quick trip to US to mess with their gangs, in return for great Japanese food, he jumps at the chance. Dragging both girls with him, along with Bull for good measure, he arrives in America like a typhoon. Will they survive his entry?