Devastated by the death of his daughter Hayashi Fuyou 林 芙蓉, widower Hayashi Ryuuzan 林 流山 devoted his life to 'resurrecting' his daughter by extracting her personality data and injecting it into robots. Considered a genius scientist by the community, he plotted his own 'death' to turn into a robot himself, i.e. No.502.
Knowing that his daughter may not live long, he conducted experiments on his own sickly daughter to extract her personality data, which eventually hastened her death.
Hiraga Gengai, the other inventor genius in Edo, said that their philosophies towards machines are the exact opposite. He said Professor Hayashi's creations are beautiful and intricate, whereas his machines are crude and ugly.