My takeaways are as follows:
- Kakuzu is way more stable than we as a fandom give him credit for being. He listens to Hidan. He stays out as requested. He steps in when necessary. He is impatient, cranky, and done with Hidan's shit, but he mostly treats him with the attitude of a 15 year old cat faced with a yowling kitten. Honestly I have become more confident in my maddieverse!Kakuzu characterisation, even though I was worried it was too even-tempered and friendly. Kakuzu actually isn't that volatile in canon. I think a lot of his characterisation is inferred from things we don't actually see on-screen, and so his murderous rages are mostly an informed character trait — he really only gets blindly angry, on screen, at Naruto, who has the main character vibes that make everyone act weird anyway.
- CONVERSELY. Deidara is way LESS stable than we as a fandom give him credit for being. We looked at him being cute, blond, young, and relatably annoyed with Tobi and decided that meant he was relatively emotionally normal, for a mass murderer. He is not. (I may be a bad Deidara writer. I've been doing him so wrong.) When we write Deidara we need to write him eating clay and trembling like a chihuahua.
- HE thinks he's normal though. Like very clearly. And he's judging everyone around him. He's the normal one in his own mind.
- Still Deidara: he dodged Gai AND Lee AND Neji. At the same time. With no arms. With a knife in his mouth. (Tenten was there too but in true Naruto tradition she did very little.) Food for thought?? Might need to revise my "Hidan could probably beat Deidara under specific circumstances in close quarters," assessment. If Gai can't catch him, Hidan can't catch him! RIP Hidan I love you but you might be smithereens.
- Hidan IS ten pounds of crazy in a five pound bag, though. We are RIGHT about Hidan. We as a fandom might need a reminder to write more of the mid-combat whooping and giddy laughter though. Also he is super athletic. I think we are all so focused on his weird sadomasochistic murder technique (he does roll his eyes back in his head and sigh about how good it feels to get 6 inches through his chest cavity, yes, that's still Hidan) that we've forgotten that, actually, absurd acrobatics are like 45% of his taijutsu style. He is so, so athletic. No, more than that. No, more.