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But I have developed views on them. In my opinion, Rukia and Ichigo's relationship is very...complex. I don't view them as just close friends, but I can't view them in any sort of romance dynamic either. In my opinion, Rukia has a love for Ichigo. And Ichigo has a love for Rukia.
He was a SUBSTITUTE soul reaper. Ichigo's SOUL became a soul reaper; that too BECAUSE OF RUKIA, not Isshin. Isshin is only responsible for his high spiritual pressure. Inside of Ichigo lives Zangetsu(Yhawach), the quincy, and white Ichigo, the hollow.