Board Thread:Questions and Answers/@comment-6207546-20130504124857/@comment-18753817-20140706130256

Stefan (Shikai - "Rust & Shatter") wrote: TomServo101 wrote: I know it's been raised in the past, but why don't Toshiro or Rangiku recognise him either. They (the former particularly, given what he attempted during the Soul Society arc) have a pretty poor excuse not to, being his ex subordinates. Powerful shinigami as a son. First name's the same. Looks similar. Went missing for no reason years ago...LIGHTBULB!! I suppose it all depends when exactly TK decided to make Isshin's captaincy part of his back story, after all this took place. Or they're all smart enough not to say anything in front of Ichigo.

When did Toshiro and Rangiku meet Isshin in the human world? He was in the house when they were in Ichigo's room during the Arrancar arc but he never encountered them.