In any event, Morihei remained in Tokyo for only about a year and did not find the business world to his liking. Noteworthy of his stay in Tokyo was the fact that he began his formal martial arts training when he enrolled in the Tenjin Shinyo-ryu jujutsu school of Tokusaburo Tozawa (1848-1912).* Morihei's practice was relatively short—only a few months—and he soon contracted beriberi at which time he returned to Tanabe to recuperate.
Tenshin Shinyo-ryu is still extant. If you get a videotape, you will see that there is little relationship between TSR and aikido, yoshinkan or otherwise. Different body mechanics altogether - even if Ueshiba had learned more than a sickly youth's three month's worth.
Albert Einstein once gave a talk on the universe and an elderly woman approached him afterwards and said, "You are wrong, Professor Einstein. The universe rests on the back of a giant turtle." When he asked what the turtle rested on, she replied, "another turtle." And when he asked what that turtle rested on, she replied, "Try as you might, Professor, it's turtles all the way."
[Hint: The turtle has the initials DR carved in it's shell]