Seiwakai is the contact karate style. Seiwakai is the aggressive style. The combat strategy is winning by knockout). Apart from the classical strike technique, this style also uses grips, undercuttings and other combat moves.
Seiwakai competitions are carried out in the full contact and in the boxer ring. Permitted technical elements include tripping, undercutting and one-hand gripes. Like Kekusinkai, hand strikes to the head and submission locks (choking, submission hold) are forbidden. The victory is declared only when the opponent cannot continue the combat.