Even during what was arguably Carrot's only real character-defining moment, Pedro's death, Luffy wasn't present. Instead, Pekoms told him about it, and Luffy didn't really react either after he was told or when he met up with the group again. Pekoms said that he was making sure the crew got out of Tottoland to make sure Pedro's sacrifice wasn't in vain, and Luffy's reaction was "Ok, makes sense." Pekoms was the one to make sure Luffy got out of the Mirro World and Luffy showed more concern about Pekoms whereabouts after he was abducted by Bege than anything he showed towards Carrot, but obviously, he has a super special bond with Carrot...