板垣退助先生顕彰会 is the dantai in Japan.
According to PR-model, itagakitaisuke.link is ranked 173,536th in multilingual Wikipedia, in particular this website is ranked 12,489th in Japanese Wikipedia.
The website is placed before seasonsinquincy.com and after kenshamrock.com in the BestRef global ranking of the most important sources of Wikipedia.