User blog comment:Xilinoc/559. THE NIGHT RIGHT/@comment-5398287-20131127194211/@comment-5398287-20131127194713

Unless Shunsui was healed off-screen, Kubo probably forgot about it, and I don't blame him. There's a lot to keep track of in this arc, and unlike with Kenpachi, Shunsui's eyepatch and scar aren't central to his character, hence it's easy to overlook them.