what would you say gin's greatest fear is? or maybe something that could be classified as a `personal demon` to him?
I have expressed before that his greatest fear is failure and not fulfilling anything that he swore he would as a child with no one to his name and no one close past seeing Rangiku who was also alone and in need of help. After all this is the most important person to him, above and beyond himself and others that he knew/knows and those that he does not. Rangiku is without a doubt the first thing to give him meaning and drive to do much more than just wonder around as a nobody with a name that isn’t even his real name and just a made up one. He only wants the very BEST for her, for her to be surrounded by things that are actually good for her, for her to be her strongest and not be snuffed out at the end of the night.
His biggest fear is it all being for nothing, not being able to get back the missing part of her soul that would help her in the long run in terms of strength and continuing to live. Her death before getting a long life is something that horrifies him every time I think about Rangiku being a zombie/dead currently in the series Gin rolls over in his grave where they grew up in Rukongai.
The personal demon is the one that he is in the same space as for a majority of the series. Sousuke Aizen is the one that fits the bill for this description in the literal sense. But that’s only if we’re talking about if he has to point to another that isn’t himself. Because in a way he is his own personal demon as well, the mind brimming with thoughts that if kept unchecked or dwelled on will eat and devour him. Mainly this has to do with the fact that if there’s one thing that Gin knows and has always known before even meeting anyone he knows in canon– it’s that he isn’t righteous, he’s not a saint or savior. It’s why he doesn’t sleep much, because for him sleeping is slipping up and thinking of the worst of the worst things he ever could through dreams. To a lesser degree this is also true when he’s awake and alone with only his thoughts, but he at least has other things to lose himself in like books or the company of others.
It’s why his time in Hueco Mundo is without a doubt the worst in terms of his state over all. He had fewer distractions, indifferent to those around him and only finding ‘enjoyment’ through messing with him as he watched and manipulated in his control room. He didn’t have much going for him during this time, no one to really talk to, walks that were once his favorite thing became dull and he stopped them, and very few books to pass the time. And in such a predicament, what does one have to do but be alone and actually think about things that aren’t so trivial?