The death of his father in 1950 marked Tōshi's total break from his past and from naturalism. In 1952, Yoshida began a series of abstract woodcuts, influenced by his brother, Hodaka Yoshida.
Tōshi's life took a significant turn after the death of his father in 1950, prompting him to move away from traditional beliefs and embrace abstraction. This shift was reflected in his artistic work, as he began creating abstract woodcuts in 1952, inspired by his brother, Hodaka Yoshida.