Renji has always tried to be as tough as Byakuya, but in the end that won’t be enough. Renji has a bankai, but it’s not nearly as powerful as Byakuya’s. Byakuya is in another league than Renji. Renji takes another loss. At 0-2 he’s in a very dangerous position right now. Of course he’ll probably get a win one day, but what if he doesn’t? Then things could get tricky. Byakuya gets the win easily and shows why he’s one of the strongest beings in all of media. Byakuya and Renji will always be 1 way rivals, but Renji will always take the loss. Byakuya wins.