It wasnt that Renji was scared of Captain Kuchiki......its that he was way stronger...and it would be dumb for Renji to disobey one of the most noble clans in the Soul Society. He trained as long as he could every day to get stronger so maybe he could become a captain as strong or maybe stronger then his Captain. He the one thought that kept crossing his mind was how Captain Kuchiki said "This stupid Human thought he could command a Shinigami...He has no authority over me.....Shinigami are on a higher level of order......"

This always made him laugh, he used it to get him through the day. And finally at twilight he wrapped it up and went off for the lodgings for the Court Divisions.He always wondered why Byakuya had theirs located near the Rukhan distract but he didnt care, not as far to travel.