Bon ben là c'est clair, c'est bien Kaien !! Hate d'avoir la traduction, apparement on a déjà des explications sur son retour.
Trouvé une trad du script sur Narutofan:
Nes Mickel a écrit :BLEACH 263 - Unexpected
Scene change to Noitora. He sitting on top of the desert with his zanpakutou stabbed in the sand, apparently thinking about something.
???: "...Noitora-sama."
Noitora: "...Ah, it's you, Tesla."
Tesla: "Yes."
(Note: The original script provider mentions here that Tesla is probably another one of those girlish looking men but looking at the spoiler pics I'm pretty sure it's a girl. So I'll refer Tesla as a she unless proven otherwise.)
She's wearing an eyepatch on her right eye.
She looks at Chad.
Tesla: "You're not going to finish him off?"
Noitora: "Of course I won't. Just because I kill off a thousand weaklings, whose gonna admit that I'm the strongest? I'm not interested in the lives of these weaklings. The one I'm interested in is... tsk."
Tesla: "What's the matter?"
Noitora: "The next closest guy was taken by A'roniro. ...Let's go."
Tesla: "Where to?"
Noitora: "Found another with pretty a big spiritual pressure. I'll crush that instead."
Noitora tries to leave.
Chad: "...Wa... wait... I won't... I won't let you continue..."
Chad barely manages to stand. Noitora sneers.
Noitora: "Oh, so you can still move?"
Chad tries to attack him using his left arm. However, he is stopped by Tesla's zanpakutou. Tesla's zanpakuto has a round center area.
Tesla: "Don't you dare think that that kind of attack in your condition could even touch Noitora-sama...!"
Chad: "...Damn... it..."
Chad, having spent his last energy, falls to the ground.
Tesla: "...Well then, let's go, Noitora-sam-"
Tesla is interrupted when Noitora points his blade at Tesla.
Noitora: "...Who told you to interfere?"
Tesla: "I'm sorry... but enemies will give it all they've got when they strike out for a final attack, so I was worried for your safety..."
Noitora: "There's no need. There's nobody in this world who can shatter by body, in heaven nor in earth. Don't you forget. 'cause I'm the strongest Espada."
Scene change to Rukia.
Rukia: "...Kaien-dono...! Please... please answer me...! Are you... are you really that Kaien-dono...?"
Rukia (thinking): "What! What am I saying...!? Kaien-dono is dead!! That night... that night, I definitely, with my own hands...!"
A'roniro: "...Yeah, it's been a while, hasn't it, Kuchiki?"
A'roniro brightens up just like he was from before. He jumps? down from where he stood and approaches Rukia.
Rukia (thinking): "...Kaien...... dono..."
A'roniro: "What, what's with that face? Lookit me! I'm the lovable Kaien fukutaichou everyone respects and loves! Aren't you happy that I'm still alive?"
A'roniro: "Hey, come on now, at least show me some reaction. Otherwise it'll make me look like a bad guy..."
Rukia (thinking): "......it really is Kaien-dono... this warmth, just like the feeling when one is under the gentle sun... it really is Kaien-dono......"
A'roniro: "Looks like you're finally starting to believe... umm, let's see here, I swear I had it somewhere... here! Sit down! Got lotsa things I want to talk to you about!"
A'roniro takes out some cushion like object and gives it to Rukia.
A'roniro: "...That night, after the battle, my spiritual form was already starting to crumble down, and after you delivered my body to the Shiba household, my body shattered and I was sent to Hueco Mundo."
A'roniro: "That hollow was Aizen's experiment. It was built in a way so that when it was destroyed, it would automatically be sent to Hueco Mundo and be reconstructed."
A'roniro: "When myself and the hollow that merged with me was reconstructed, it took the form of my own body. Up until here, I'm sure everything was according to their plans. However! Turns out that the one in control of my own body was myself!"
A'roniro: "Simply put, my impenetrable mental strength overcame all and threw a wrench into their plans!"
Rukia: "Ka... Kaien-dono! Please, be a little more serious!"
A'roniro: "Well yeah, but... you, you still looked depressed, so..."
Rukia: "We should be discussing this more seriously!"
A'roniro: "Fine, fine, don't be so angry. ...Anyway, so I regained control of my own body, and I switched places with a member of the Espada so I would have an opportunity to strike at Aizen."
A'roniro: "Outside, there was blue sky, right? Aizen made that blue sky inside the giant domes of Los Noches, and Aizen knows everything that happens under the lights of the blue sky."
Rukia: "...Wha..."
A'roniro: "...I'm glad it was you who I ran into first, Kuchiki... I don't think anyone else would be capable of carrying out the plan I'm about to tell you."
A'roniro: "...We should get moving. Come here, Kuchiki."
Rukia: "Yes!"
A'roniro strikes at Rukia with his blade as she approaches. Rukia manages to dodge at the last second but is bleeding from her new wound in her cheek. Rukia looks like A'roniro.
A'roniro: "...So... you have indeed become stronger..."
A'roniro: "Kuchiki. kUcHiKi."
(Note: A'roniro calls Rukia Kuchiki twice, as if there's two simultaneously voices speaking at the same time.
Sidetext: The blade that slashes its way through hope! Is he really an... enemy?
END
L'explication de son retour est un peu légère mais bon, pour une fois qu'il se passe quelque chose de surprenant dans cet arc, je vais pas me plaindre. On dirait que Kaien a réelement une double personnalité, et j'ai l'impression que lui-même ne s'en est pas rendu compte sinon il aurait averti Rukia dès le début. Il dit qu'il a échangé sa place avec un membre de l'espada, est-ce que ça veut dire qu'il l'a tué et qu'il est donc plus fort qu'un numéro 9?