- #146
But yeah, I think Rukia is the only one who really knows anything that is part of SS. Honestly, I think she wanted to do this more than anything. I didn't think she was a person to just completely ignore or forget about someone. But honestly, with her, his dad, Urihara and Ichigo's returned Shinigami power could easily take on anyone mind controlled + Ginjo and (can't remember his name guy).
Actually going by that quote ("WHAT? Ichigo would never do such thing!") of rukia's we heard through badge, it seems that Rukia was the only one in disbelief.
So i am thinking it went similar to this:
"SS is all ' ichigo did that and that, let's execute', so rukia contacts urahara, which in turn contacts isshin, who obviously is connected in some way to those fbs, so they devise a plan"
If i am right, Ichigo right now should be in perma-shinigami mode(since his body " vanished" when he was stabbed), hence " ruin my son's future" phrase of Isshin's.
AS for personality:
The start ichigo was all about rushing with brute force. However through the manga he sort of developed a genius level of in-battle thinking and tends to analyze his opponents, their weaknesses and personalities, etc. Not to mention that right now, when he got his powers back, Ichigo has been in constant paranoia, depression and does not trust anyone including his own father. That has bound to reflect upon the powers too.