Jin to Neko wa Yobu to Konai

In the gritty backstreets of Paris, Jin ekes out a living as an informant while his buddy, Mari, does business as a hitman. They've been friends since they were brats, but Jin's demanding behavior has Mari growing increasingly resentful. Even so, Mari can't seem to cut ties with Jin. Has their friendship lasted so long that it's become impossible to break? What will happen when Jin's new live-in boyfriend ignores Mari's warning about Jin's carefree lifestyle…?