User blog comment:AYET/Chapter 748 - Talk about a debt repayment/@comment-24850639-20140521155240/@comment-24850639-20140528153319

I know this non-canon so it doesntly really count, but I don't think it should be ignored:

- In OnePiece: Mugiwara Chase, Zoro cut through Luffy's Kairoseki cage to set him free (and the weird bird/dog thing)

- In OnePiece: Hand Island, Sanji kicked through Luffy's kairoseki cage to release him and Regis