More speculations: Assuming this is from the same series, "Miss Angel" is the Lynx mentioned in the title, and possibly she is the yukkuri's appointed protector.
I think the title may had more to do with the "old noir war stories" style, i recall many noirish war stories with similar "animal themed" titles and with the same gritty and dark style.
>_> I still think that the Miss Angel is actully a Tenshikurri which the manjuus delude her masochismn with being "stronger than mister humans"