Board Thread:Questions and Answers/@comment-1754938-20150922055002/@comment-1754938-20150922085849

Smoking gun wrote: Rukia most likely never met or seen Isshin in the past, given that they were different squads, and during her stay in the Kurosaki house Isshin was still without powers and essentially a human like any other. People speculate Isshin later on simply avoided contact and hid his presence. No one would really expect the vanished former captain to be residing there, so it shouldn't have been that hard.

Though I gather Kyoraku, being far more observant and experienced, would have noticed something, hence why I'm sad his visit to the Kurasakis was merely mentioned briefly, but never shown.

I should disagree a bit with you there. Rukia was adopted into the Kuchiki clan which is a noble house. The Shiba Clan was also high-society till the death of Shiba Kaien.

I am sure that in the overlapping 20 - 22 years ( 20 years ago is when Isshin lost his powers, 40 years prior to the start is when Rukia was adopted into the Kuchiki house and fast-tracked to squad #13), there should have been 1 instance when they met in the soul society.