Well JoJo has quite a few child sidekick who are pretty good, like Hayato, Emporio in the animated parts, of course if you haven't read/watched JoJo you wouldn't know these characters.I always did think Annie and Ieroh had more chemistry, and they spent a lot more time together, so the two of them marrying is all fine and dandy to me. Red dying, well, that's honestly fine with me, he cheated death more than enough. Chirika surviving was great, he was my favourite character. I don't think I've ever seen a child sidekick done so well, in any medium, at least not as far as I can remember.