Talk:Ryuujou/@comment-26293410-20150715220512/@comment-135.23.225.8-20150716095233

Well, it might be wrong, but there are a lot of people on forums who say this and I originally got that info from Japanese pixiv. I did some more research and they are said to be the same because the original hull measurements were very similar. http://dougakan675.blog49.fc2.com/blog-entry-94.html

So yes, you can consider RJ to be a distant cousin of Aoba and Kinugasa.