Heionken

Heionken (重たい息の技, lit. Calm Fist) is a martial art developd by Sandberg during his many years sailing the seas learning from diferent masters and improving his techniques with each new thing he learnd. As of now Berg is the only user of this style, still not having found a proper student.

Overview
A name given to Berg's peculiar way of fighting, originaly unnamed as he used to simplely fight using his body and not his head, thinking about the consequences later. Roughness and Power being the most commun concepts around Berg's time lead to him opting for a more fast and precise style based around his incredible speed.