The Bonten Unryu is one of the signature lines by Ryusen. It is considered as one of the best VG10 line by any Japanese maker, because of its unmatched artistics and more importantly, their VG10 blades are hande forged one-by-one. Ryusen is one of the earliest adopters for this stainless high carbon steel and certainly knows about its heat treatment. The Bonten Unryu features 63 layers damascus steel that polished to a very high level of finish. I certainly think it is one of the best VG10 out there at this price range.