This guy right here has absolutely insane detail and the sheer amount of parts that can be moved into custom positions is mental!
The entire visual aesthetic is amazing, even more so when you transform it into it's dragon form. Very much loving it!
However there are two things I found to be rather challenging, Firstly almost all the stickers included are water stickers. Unfortunately the instruction book is booth almost fully Japanese (although still simple enough to understand when building) and doesn't really show where to place them. However there are enough pictures included to get the general idea placement wise.
The second thing is this model actually has so many moving parts that it almost scares me to touch it, but that in itself is also one of the cool parts hehe.
Overall I absolutely love this model and I might still come back to it later for further customization.