1) From Tekken series: As the leader of the
Manji Party, Yoshimitsu dedicated himself to providing food, medical assistance, and shelter to the ever-increasing number of political refugees around the world. Unfortunately, with a constant lack of necessary funding and manpower, Yoshimitsu was unsure about the future of his organization. When Yoshimitsu heard about The King of Iron Fist Tournament 4, he envisioned a union between the Manji Party and the Mishima
Zaibatsu. With this dream in mind, Yoshimitsu decides to enter the Tournament immediately. He must defeat
Heihachi Mishima at any cost.
2) From Soul Calibur series: There was once a
ninja clan that was massacred at the hands of a vengeful lord. Yoshimitsu, the
sole survivor of that clan, swore to avenge the fallen, but was no match for the army that protected the lord. Helpless and alone against the enemy, Yoshimitsu
the avenger was chased off. Although he lost one arm during his harrowing escape, he managed to cheat death only because of his considerable ninjutsu abilities and a great deal of luck. Despite this experience, Yoshimitsu could not give up his desire to avenge his clan. He saw opportunity in a rumor that circulated within Japan during that time and decided to travel overseas.
Soul Edge, the ultimate sword—if only he possessed that sword, he would surely be able to cut down an army at will. Yoshimitsu traveled across the continent, chasing down rumors of the sword. When he finally reached Europe, he came upon the aftermath of a massacre. During that time, a series of mysterious killings
wreaked havoc and spread terror across Europe. The bloody carnage before Yoshimitsu’s eyes reminded him of the slaughter of his clan.