Takuma learned Kyokugenryo Karate from his father, and trained very hard since he was to be the sole heir to the Kyokugenryo Karate style. Takuma became a skillful fighter in no time, due to his constant training and desire of superation. After being named the heir of the Kyokugenryo Karate style, Takuma meets an American woman, called Ronnet. He falls in love, and they get married, both moving to Southtown, a small city which was still peaceful at the time. Takuma and Ronnet had their two children, but Ronnet gained a disease, and died time later. Takuma was filled with grief, but his hopes now rely on his two children. He resolves to make them the best fighters in the world!

Takuma begins training his son Ryo, using the same method his father used. He left Yuri since she was still too young to be training. Soon after, Takuma received Robert, and began training him as well. There were not many students, but Takuma vowed that soon Kyokugenryo Karate would gain many followers! However, Southtown slowly became plagued with crime and dispair. Geese Howard was in charge, and he had corrupted any way of justice in town. Now, Southtown was nothing more than a criminal central. Not able to tolerate so much evil, Takuma decides to go and stop Geese. He leaves the dojo, and heads for Geese's tower. Easily taking out any resistance, Takuma arrives to Geese's personal office. He demands Geese to stop the madness, but Geese just grins, and snaps his fingers. Then, some of his lackeys take out Yuri with them! Takuma is unable to do anything, since Geese promises that if Takuma does anything smart, he would kill her. Then, having Takuma under control, Geese demands Takuma to work for him, and so he can not be recognized and dishonored, Geese gives him a "tengu" (bird) mask for him to wear. Then Geese leaves on a business trip, and leaves his right-hand man Mr. Big in charge. Now Mr. Big ordered Takuma around and obligated him to do criminal stuff, the things that Takuma hated to see and now had to do.

However, Takuma soon was informed that his son, Ryo, and Robert had went on a journery around town to search for the disappeared Yuri. Secretly wishing that they may have success, Takuma then sees how old rivals of his come out to fight his students. There was Rhiyaku Todoh, and Lee, but he was happy to see that both Ryo and Robert overcame all obstacles. That rised Kyokugenryo Karate's pride, and soon, they arrived to where Mr. Big was. Watching from a secret room, Takuma saw with pleasure how Robert thrashed Mr. Big. Kyokugenryo Karate rises high! However, Mr. Big calls out for Mr. Karate, which was Takuma's name now. Now he had to face his own son, as Robert was unable to fight. Both engaged in a heavy, passionate battle. Takuma liked to prove how much his son has improved, and became evident when Ryo defeated him. The new generation had won, and Takuma was happy. When Ryo was about to finish him off, considering him the mastermind behind Yuri's disappearance, Yuri appeared. She begs Ryo not to harm him, as he was his father! Indeed, Takuma removes his mask to reveal his true face. Once again, the family is reunited, and all vow to defeat Geese, but they abandon the plan when Geese gets involved in trouble with the Bogard brothers, sons of Jeff Bogard, who was murdered by Geese. Takuma once again leaves to his dojo, where he begins training Yuri at Ryo's back (since he opposed to Yuri being trained). He also begins to receive lots of students, and Takuma finally sees how the Kyokugenryo Karate has finally been honored as it should be.

One day, Takuma received an invitation for the new King of Fighters tournament, introducing the new team battle mode. Takuma tells Ryo to join him and represent Kyokugenryo Karate in the competition, but then Ryo opposes that Yuri should come with them. Takuma accepts anyway, and invites Robert to tag along. So, all three now desire to make Kyokugenryo Karate proud, and Takuma proves that you can still teach an old dog some new tricks! Being one of the last fighters of the past generation, Takuma fights to show true Kyokugenryo Karate power! He always puts Ryo and Robert to train again after ever tournament still! (Much to Ryo and Robert's dismay)

After the second King of Fighters tournament, though, Takuma feels too old after seeing all that display of young power. He then decides to leave it to his children and Robert. He calls for Yuri to make a team with Ryo and Robert, but since she is not too sure now, Takuma threatens to cancel all her credit cards, and Yuri is obligated to go fight in place of her father. Takuma then takes a seat back and watches the tournament, but he is always trying to pass by a secret guy using his Mr. Karate identity! However, he now goes back to action after his dojo and his students get trashed by some maniac. He then decides to go out on his own and look for this man, and meanwhile, he tells Ryo to go to the tournament cleanse the name of the Kyokugenryo Karate. Saying this, Takuma follows his own path...

After his sons and best student successfully defended the name of Kyokugenryo Karate for the last two tournaments, Takuma feels that his martial art style has finally earned a name for itself. However, the new King of Fighters tournament rekindles Takuma's fighting spirit, and is obssessed with the idea of showing the whole world that Kyokugenryo Karate has not grown old during the two-year recess period. This time, taking advantage of the four fighter system, he would once again leap into action as the patriarch of the new generation of Kyokugenryo Karate!

Last year was a good year for Kyokugenryo Karate, but Takuma is worried about the future destiny of the clan. Takuma considers the relation between Robert and Yuri, but Yuri is still his little girl, so the idea is discarded for now. On the other hand, Ryo has that crush on the bar Muetai girl, King. She was strong, determined, and brave...everything that Takuma could ever ask for! Takuma is decided to sustain that relationship to the very end, but how can he demonstrate his support? Suddenly, Ryo meets him, and tells him that, since Yuri has gone away with her friend Mai Shiranui, they should might as well take King in their lap. Perfect! With enthusiasm, Takuma welcomes the entry of King, much to Ryo's surprise (he thinks Takuma has a few loose bolts).

The year didn't end well for Takuma, as the Zero Cannon explosion had wrecked his dojo big time. But Takuma vowed he would build it up back from scratch again. But while he was busy supervising the process, his student Robert came up to him with bad news: Robert's company had gone bankrupt thanks to a world financial crisis. Takuma instantly made ends meet, and he knew that without Robert's financial support, he wouldn't expand his dojo anymore! Takuma hurried his sons into the task of entering the next King of Fighters tournament, in order to win the prize money and help Robert out!

With his wealthy experience and stiff battle skills, Takuma was a veteran to be watched in the tournament. His wise knowledge and vast experience against many martial artists proved to be his ticket to many victories, and ultimately prevail in the end. After NESTS was destroyed, Takuma saw it fit to cash the prize money in order to help Robert, but Takuma admits that he did it in order for Robert to keep supporting his financial needs. Robert gets pretty ticked, but Takuma is already used to the fact that his students easily disrespect him!

Takuma seems to be a strict man, but he is really kind-hearted and loves his children and respects Robert a lot. He is proud of how Kyokugenryo Karate has evolved, but still feels that it has more path to follow. Takuma still trains whenever he has the chance. He has not left his "tengu" mask, though, as he has taken quite a liking for it. He is also always giving corny speeches to his students, which they more likely seem to be bored.