Hi Jayfar, I'm attaching updated pics of my Ootakarunoshima taken today. In terms of rate of growth, these larger beans grow a bit faster than the smaller beans like sekais, about 1.5 to 2 leaves a year. Once they start offshoots the plant seems to grow faster by virtue of the number of growths. Thus is the plant 2 years from the FB pics with 4 more new growths !!
As you can see it looks a lot larger now than in 2012....