So Ichigo isn't the only one.

Well, chances are that Ichigo's father is a rather uncommon example, but considering how inordinately long the history is of Soul Society (thousands and thousands of years, at least), it would be surprising if he was the only example.

How many are there? Damned if I know, but my guess is only one 또는 two at the moment. If there are any, we'll be seeing them soon.

Chad giving up his powers...I think it's reasonable. He's worried about what they're doing to him over time, and there's good reason for that. His powers are evolving at a decent clip, and perhaps he feels they're taking on a mind of their own. What I'm concerned about is what "giving" all these powers to Ichigo entails, since it might have a negative effect on Ichigo (note how there's no other half human, half shinigami walking around with amazingly buffed hollow powers right now).

Chad will be very important for this section, but for some reason, I don't believe he'll give up his powers at the end of it. We'll see if I'm wrong, but if he does, he'll definitely become less important.

I don't think it is easy, though they haven't fully described the process (they said his powers have to return before they can give him theirs if I remember correctly). There's always a catch, no clue what it is as of yet, though I think we may get some closure on the most recent hollow Ichigo form (like, where the hell it came from).

The one who attacked Ishida wasn't in the room, so I don't know what his motivations are. There's another group out there (for all we know, this is one of the people who is half human, half shinigami) for sure, but until we learn something 더 많이 than "he attacked the guy following him," it's going to be difficult to dissect. His motivations could be as 당신 say, 또는 they could be to prevent something harmful (who's to say he's bad?), 또는 they could have absolutely nothing to do with what's going on.