Kunyora kupfuurira kweiyi ndima - Kupukunyuka kurasikirwa kweanotakura kwake paMidway, Shimakawa akaendeswa ku204th Air Group iyo yaakagoverwa nayo kuhondo yeSolomon Islands
muna August 1942. Vachibva kuBougainville, Shimakawa neshamwari dzake vaiwanzosangana neCactus Air Force pamusoro peGuadalcanal panguva yehondo yechitsuwa ichocho. Arohwa nemarariya, Shimakawa akaendeswa kuJapan muna March 1943.