is bleach episode 53 filler?

Standing across from Rukia Kuchiki, who is flanked by four members of the Kidō Corps, on the bridge leading to Sōkyoku Hill, 3rd Division Captain Gin Ichimaru chides Rukia for not addressing him as Captain Ichimaru and asserts that she will be scolded by her brother, Byakuya Kuchiki, if she does not change her attitude, only to chuckle and casually state that he was kidding before promising to not tell on her when a sweating Rukia nervously apologizes.