It seems lean's smile came after hikaru showed his flare.
So he might think hikaru and hyuga both are threat to his flare so he will break their beys and hyuga will not become corrupted. I have faith in the writers that they will not use the cho-z concept again.
So he might think hikaru and hyuga both are threat to his flare so he will break their beys and hyuga will not become corrupted. I have faith in the writers that they will not use the cho-z concept again.