Board Thread:Questions and Answers/@comment-4726368-20130508221557/@comment-5649676-20130611113230

Another pun for Kuroiwa Ryuusei = Kageyama Reiji is their initials (K.R.), are the same.

But well, we still don't officially know who this Kuroiwa-kantoku is or what is he really intending to do with Shinsei Inazuma Japan. But since he was seen talking to Endou (Mamoru, I assume? Haha before reading the wiki I thought it was Endou Daisuke) in the end of the first episode, I think he got good intents, as it's impossible for Endou to "sabotage" soccer, unless Kuroiwa is pretending once more.