Board Thread:Questions and Answers/@comment-24963288-20190412183516

so we know that Rukia and her sister came to soul society together but I'm like completely confused on how souls in soul society age, I mean Rukia said she's far older than Ichigo and in the epilogue, she and Renji have a daughter more or less the same age as Ichigo and Orihime's son so how do they age it seems completely strange and annoyingly unmentioned 