I think they must have borrowed ideas from Walkera but finally they are just similar as any helicopter to another. From the pictures at http://www.hitecrcd.co.jp/RC/nine_ea...ro1803d/sp.htm
what reminds me the V120 is just the skids, battery cage, the color of RX and the fact that it is torque tube and FBL.
The servo placement is different as it is the swashplate, more similar to bigger helis.
The motor is placed under the frame.
The main gear seems smaller but we cannot see how the torque tube connects to main gear.
The head reminds a Walkera head cause of the swash to link stabilizers, seems like more a V120D01 hub or 4#6, V370D01 etc.