Morihei Ueshiba 植芝 盛平, the founder of Aikido, and Jigoro Kano 嘉納治五郎, the creator of Judo, were two of the most influential martial artists of the 20th century. While their approaches to martial arts differed significantly, they shared a deep mutual respect for each other and for the values of traditional Japanese Budo. Their interactions reflect an intriguing dialogue between the preservation of martial tradition and the evolution of combat into a modern sport. Jigoro Kano (1860–1938) was a visionary who sought to modernize traditional Jujutsu into a structured discipline suitable for education and competition. He mastered both Kito Ryu 起倒流 and Tenjin Shinyo Ryu 天神真楊流 Jujutsu 柔術. In 1882,…