User blog comment:Purple sky4/who invented Kido?/@comment-5109381-20130427091542

We have no clear info about the aging of shinigamis. Unohana Have stayed the same for a 1000 years, while Hisagi grew from his early teen years to his late 20s in 100 years. I think it was Osho. NathanLuxe (talk) 09:15, April 27, 2013 (UTC)