Black Collar

[WrongFriend]

Does anyone remember the Sci-Fi book first published 10-15 years back? Story of space ninjas. They wear black bullet proof uniforms with black collars. They don't use rayguns but small octangonal shurikens not to be detected. Exciting! So excited I've been dreamed of their kind of octangle shurikens.

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\(^o^)/ Mizutani Satoshi \(^o^)/