Hi limit was completed by Demo Doa Manga Scanlations but is Licensed by vertical and they already completed the series 6 volumes and you can buy them in amazon
https://www.amazon.com/Limit-1-Keiko-Suenobu/dp/193565456X/ref=sr_1_3?s=books&ie=UTF8&qid=1468454421&sr=1-3&keywords=limit
I hope this...