Aikido is a non-violent, self-defense art. Aikidoists learn to evade and redirect the power of an attack, resulting in the attacker's being unbalanced and either thrown or immobilized. Thus, it is the aggressor's own force and momentum which neutralizes the aggression.

Because of the principle of active non-aggression, aikido can be effectively performed even against larger, stronger persons, or even against multiple attackers. For this reason, Japan House aikido training is ideal protection for both women and men faced with dangerous domestic situations.