Several of his early works were uncredited second key animation and in-betweens for his brother during high school.
Not wanting to explain, Yoshinari told Madhouse "being an animator is too hard for me", and switched to Gainax.
He is recognized by the way he represents volume and perspective using spheres,[3] especially for smoke and explosions,[2] as well as his character action in general.
He remarks Nijitte Monogatari is one of his most important influences,[3] with his artistic style particularly visible in his design work for Tengen Toppa Gurren Lagann,[4] and Little Witch Academia.
[5] His favorite American creators are Genndy Tartakovsky, Craig McCracken and Lauren Faust.