im korean, not japanese, but im pretty sure 'shiro' means 'white' and 'hoshi' means star. so maybe its shiro hoshi.
'Hoshi.'
hikaru
its kuro
kuroikokoro
Kurotsuki
Kokushibyou
kokuchou
kuroji
kuroari
if you mean shooting star its nagare boshi
Kuroi sora is black sky.
Kuro Aisu=Black Ice