KINOSHITA was born in 1886 in Ashimorimura, Kaya District, Okayama Prefecture (current day Ashimori, Kita Ward, Okayama City), the second son of Toshinaga KINOSHITA who was the younger brother of Toshiyasu KINOSHITA, the last lord of Ashimori Domain.
明治19年（1886年）岡山県賀陽郡足守村（現・岡山市北区(岡山市)足守）にて足守藩最後の藩・木下利恭の弟・利永の二男として生まれる。