>>7003505If you can at least remove the arms at the shoulders and legs at the waist, that opens up a fair bit.
The legs from the unpainted showing look like they might just use a typical revo joint of some sort, the ankles look like it too. (Could be smooth ones)
Wouldn't be surprised if the shoulders had one as well as the part between his tshirt and body.
Guess we will see when Yamaguchi starts posting pictures up on his Twitter.