- Both pairs have a Genki Girl (Asakura/Tsuruya) and a Quiet One (Nagato/ Kuyo Suo)
- If you believe (fairly well supported at this point) WMG that Asakura was originally the primary interface than Tsuruya could be the primary, with Kuyo Suo as the backup.
- That would mean both backups tried to kill a brigade member.
- Both backups seems to different approaches from the primary also
- Both backups rebelled. Even if Tsuruya is the backup, she could be rebelling by helping the SOS brigade.
- Considering how alien the Sky Canopy Domain is, it's not clear Yuki would automatically detect her as an interface. Especially if she didn't want to be found and could pass as human(Suo is obviously odd).
- It's also possible Yuki knows this and just hasn't said anything as Tsuruya hasn't been dangerous. And Yuki never volunteers information without a reason.
- She's the only character other than the Humanoid Interfaces to have an unnatural hair color. So...
- Probably the best evidence is that Tsuruya neatly avoid the incident at Snow Mountain. Almost like she knew it was coming
- The "Itsuki guesses she is off having her own adventures" evidence in the Writer God section below is not something uniquely stated in the series. Kyon hypothesized something similar about another character in the same volume that Tsuruya first showed up in. Yuki.
- It would seem Tsuruya's adventures (based on an off-hand comment) involve Espers, Aliens, and Precursors with super-advanced technology. She "shares" the Aliens and Espers with Haruhi. Note the interesting discrepancy, in the Kyon/Haruhi verse, the Precursor Technology concept would completely conflict with their current "definitions." Therefore, she avoids direct interaction in order to prevent an Armed with Canon situation (between gods) that could damage reality. Kyon's willful rebellion to the Time Travelers in unearthing the Out Of Place Artifact could have significant results metaphysically.
- Alternatively, Tsuruya is in fact part of the anti-SOS brigade as the Evil Counterpart to Kyon. Note the goal of Fujiwara, the Counterpart to the time travelling Mikuru, is to make time travel impossible, and as a character, he shows utter contempt for all aspects of it. Sounds like a character created specifically with Armed with Canon in mind, don't it?
- Plus, she's got a pretty big house, so she's probably rich. Also, her family DOES have ties to the Organization, perhaps providing them with technological support. It would also explain the buried futuristic stuff in the mountain
- And after all, she appears to be undead in the movie. If the cat can talk because of Haruhi, then how do we know Tsuruya, Taniguchi and/or Kinikida weren't changed also?
- This fits in nicely with the above Vampire WMG.
- Totally agree! This occurred to me about Tsuruya as well. She continually acts like long-lived character types you see in other animes, movies and television shows. The "is that what [they] look like these days?!?" is only one example. She's confident, raucous, behaving almost like Doctor Who in a new time zone just living it up like a tourist. If Tsuruya is not a vampire, then she is some sort of immortal (Highlander anyone?), long-lived creature taking human form (dragon?), or spirit taking on human form. Since its a Japanese show, she might even be akin to the Kitsune who can take human form (although they usually have some strange physical trait that remains like... cute little fangs!)
- Now I have this mental image of Tsuruya as Alpharius
- Better yet, she's a Sonozaki. It makes sense. We don't know her last name. She's rich, and we have no idea where the money comes from. She has green hair. If either Shion or Mion gave birth at 19, the timelines would match up.
Tsuruya is mysterious and has her own goals and background. She apparently knows enough to repeatedly as of volume 7 to tell Kyon "We're the same thing. Not like them". Borrowing from above, Tsuruya in the movie states she is only pretending to he mind controlled. What character has been practically immune to every dimension rewrite or noticed odd things? Kyon. Tsuruya's role balloons greatly in the same novel we are introduced to the anti-Mikuru, anti-Koizumi and the story after we see the first hints of the anti-Nagato.
This doesn't mean she is the Anti-SoS Kyon. She could be a rival Writer God to Kyon's True God WMG. If Kyon is a reality anchor, Tsuruya could be another who is aware enough of her nature to attempt to remain untethered to Haruhi.
In this guise, Tsuruya is probably older than a High School student but just has a younger appearance. This makes a lot more sense than her being so fabulously wealthy. She is supposed to be so wealthy that her family owns numerous houses and even numerous ski resorts. There is no way that an heiress with such a background is going to be attending a broken down prefectural school! An heiress of this level would be in Eaton or something.
On the other hand, as a government agent, Tsuruya would have access to facilities to bring the SOS Brigade to for observation and study under the guise of having her family "own" them. Another giveaway is the skillful and police-like questioning Tsuruya often subjects Kyon to. She's trying to play the "good cop" and claim not to really care what is going on as long as Kyon takes care of Mikuru. However, she skillfully questions Kyon to let him know that she knows good and well what is going on then backs off, trying to draw him out. Tsuruya being an undercover agent would also explain her combat training abilities (alluded to in the movie and shown to humorous excess in the Haruhi Suzumiya-chan spinoff cartoons).
In the same way that Yasumi was created to save the brigade from that particular crisis, Tsuruya in there for a more permanent kind of support.It has been stated that the Tsuruya family is strongly linked to Koizumi's Organization, wich in turn provide for a lot of the Brigade's adventures.She protects and gives moral support to Mikuru, so Haruhi doesn't feel guilty about abusing her.She blatantly flirts with Kyon so as to express Haruhi's feelings, but never seriously because Heruhi wants him for herself.Koizumi mentions that Tsuruya may be having her own adventures offstage, wich would satisfy Haruhi's fancy for great adventure without cutting into the brigade's time.The similitude between them is explicitly and frecuently metioned. She supports all that Haruhi does, but stays out of the limelight because Haruhi has given her a secondary role (She didn't even want Yasumi to join, but she was forced to allow her in because it was part of the mission to save her friends).Tsuruya is also a filthy rich genius that could go to the best schools in the world and yet attends a crappy prefecture high.Kunikida admits that he only went to north High to meet Tsurya and he was the only friend of Kyon's in high school before the Brigade, thetefore Haruhi broght him to keep Kyon company.As Haruhi comes closer to coming to terms with herself and her power, Tsuruya starts having a more explicit role, providing the treasure map and the cabin for the Snowy Mountain Syndrome so they can have fun and becoming closer to all the gang, but always staying in the sidelines and refraining to question anything, since tht's not the job Haruhi gave her.
Her comment on video cameras and her unusual strength just as easily lend themselves to youkai longevity and power. Furthermore, it would explain her simultaneous delight and disinterest in things such as espers, aliens, and time-travellers. If she's been a teenager for dozens or hundreds of years, of course she'll be glad of the novelty they provide. But since she herself is a fairy-tale creature, she's hardly desperate to be included in the paranormal world.
- Her family name is spelled with the character 'tsuru' meaning crane; it's possible that's her family's type. This is further supported by her own 'bird-brained' behavior.
- If she does come from a clan of youkai, that meshes quite well with the image of the yakuza Tsuruya family and the business magnate Tsuruya family.
- Itsuki himself mentions that the Tsuruya Clan supports the Organization financially. Why would they do that unless Tsuruya's parents knew that their daughter was also part of the Organization?
- Why would a daughter of such a powerful family go to such a lousy school, unless she either was under orders from the Organization, or volunteered to go, in order to keep an eye on Haruhi?
- It's stated explicitly that there are multiple TFEI Interfaces watching Haruhi; why wouldn't the Organization have additional espers watching her as well? (This would also explain why Itsuki transfers to North High—Tsuruya needed him to come and interact directly with Haruhi so that her cover wouldn't be blown...)
- For that matter, how else would she know that Asahina and Nagato were anything other than normal students, unless she were already "in the loop"?