Two weeks!? What the heck? If the other island so far away the dude will swim for several days, then rest for a couple of days, scout the place, and swim back for several days? Is he going to sleep floating in the ocean? I didn't know a human could do that. He's going to burn in the sun, though.
I would expect Byakuya to cause trouble in two weeks' time, but Ms Microsoft seems to think otherwise.