Aikido in Harmony. Warning: Not for Street-fights!
Aikido is not used in any martial arts competitions. It is not a sport. For self-defense, its purpose, according to the founder, Morihei Ueshiba, is to blend with the attackers motion and redirect their force. In principle, to be in harmony even during conflict. In the dojo, you train with various partners to build character. So let’s not get into the “it doesn’t work in the street” argument, please. There are some martial arts with priorities other than winning a cage fight.