I've read the first 6 volumes now. The plot's fairly good, especially since I have a keen interest in Ancient Chinese military, plus the art seems similar to the series Souten Kouro (which in turn, is an adaptation of China's Three Kingdoms Era, roughly 300 years after Kingdom). The only problem I find thus far is the translation. The first volume had the era as AD rather than BC, whilst the fanslators keep switching between the correct Chinese names and their Japanese equivalents at the drop of a hat.