Its because the manga is licensed in English. Basically meaning that there is an 'official' English version of the manga you can buy to support the mangaka, which also renders scanlating (which is illegal anyway) in violation of international licensing laws (which it is anyway). So there is an English version you can buy. Its called Love Pistols, because the mangaka had to change the name because of a law suit from a British band of the same name, and is licensed by SuBLime. You should check it out if you're really into the manga.
Just talked to my Friend living in France she just bought the 8 volume and she said that its up till chapter 50.. I literraly wanna cry now... the scans are out why nobody translate them ╥﹏╥