It was in part influenced by pieces of the Japanese manga. For example, "Star of the Giants" ("Kyojin no Hoshi"). This legendary sports anime was aired just as I entered the elementary school. The hero, Hyuma Hoshi, overcomes obstacles after obstacles to become a true star of the Tokyo Giants, the one and only powerful and popular baseball club at that time.
The idea was to make efforts, to show perseverance, and try to transform yourself, both physically and spiritually.
Somehow the idea of making strenuous efforts gripped me. When I was eight, I remember quite vividly how I started to run along the school track with some of my friends in the after hours. As my friends dropped running, I continued to run around, never stopping.
The theme tune of the Star of Giants was in my mind, inspiring the eight year old. It was a stupid thing to do, but fun.
I gave up running only when the bell rang and the school teacher came to tell us that it was time to go home.
To this day, I sometimes wonder if I don't carry the flag of perseverance still in my spirit. When things get hard and the circumstances are against you, I sometimes remember the small child that was I who made bold efforts to overcome.
I suspect that I was a loner in that respect. The influence of an amine has many colors for different people.
Some scenes from the now legendary "Star of the Giants"