(Theory) Rin is special. She’s keeping the Tree of Ages ‘pure’
I’m starting to think that Rin is not just there to sleep. or as a hostage.
Her being inside the Tree of Ages is intentional.
[1] She’s there to keep the balance, and allows the Tree of Ages to manifest its ‘good side’ -keeping in mind that Root Head (’evil’) is latched on the tree.
[2] While at the same time, keeps her in some form of ‘stasis’ or protection - that’s why Sesshomaru is kind of ‘fine’ with the things as they are.
[3] ‘Treekyo’ has natural sleep-related powers. She can put Root Head to sleep. With that, she can put Rin to sleep as well?
[4] The ‘Dream Butterfly’ is a compounded sleep effect, commissioned by Sesshomaru.
[5] Rin being inside the Tree is intentional. Either she, Kagome, Sesshomaru, or Kaede, set it up.
[6] Rin is keeping the Tree ‘pure’ while Kagome is away, probably doing the other ‘equally taxing part’ of the plan in another time/realm, with Inuyasha. Meanwhile, the village remains in a state of calm, with Kaede around.
[7] If that is indeed a birth kimono and she really had complications with childbirth, then theory [2] can still apply and [1] is just an after effect. Probably an idea suggested by Bokuseno/MamaSessh to Sesshomaru.
[8] Rin is special. She was the first person revived by Tenseiga (Sesshomaru). And her soul was not so easily consumed in the Underworld. I think the Meido stone revival is not applicable to everyone. There is ‘something’ about her, that links why she’s in the Tree - aside from being Sesshomaru’s important person.
Enables the Tree to manifest it’s ‘good side’
Previously, I’ve made a theory post discussing Treekyo’s role and said I can’t decide whether she’s good or bad. Now I think, parallel with the Shikon no Tama, the Tree of Ages can have a good side and a bad side too, depending on the soul of the ‘user‘.
I’ll say it again, Root Head is stupid - he is just sneaky. Watch Episode 1 again and see how reckless he is. In Episode 4, he even allowed himself to be bribed by Moroha. My theory is that someone is using him (Yotsume? fake Yotsume?) in feudal era to cause commotion in the village where Kagome is and eventually look for everyone’s weaknesses. Why? To buy time for the rise of power, to buy time for acquiring the pearls. The later goal of which could also be to corrupt the Tree of Ages. (I’m not sure if Root Head was fully exterminated from the Tree, re Ep 4)
I imagine Rin sacrificing herself to keep the Tree ‘stable’ while the other OG cast do their part of the plan re Degenerate Age [1], [6]. Her driving factor? Towa, Setsuna, Sesshomaru.
Rin is shown on episode 4 and 8 for build up. There would be something special about her character like as discussed in [8]. We haven’t seen adult Rin so the possibilities are endless, like, she has developed some purification or channeling powers..? [9] We're all clueless with the happenings right at this point (after Ep 8), but the reason why she is IN the tree and why she of all people (and not someone else, i.e. Kagome) has something to do with the bigger picture of the problem we have in Yashahime.
The Dream Butterfly is commissioned by Sesshomaru
Kaede mentioned that the last time she saw Sesshomaru was when he took the twins with him. He’s never been in the village again, meaning, Rin is not there any longer. He has no reason to go back. So that’s assuming Rin has been in the tree before he took the babies,~14 years ago. I assume he took care of them for the mean time until the fire incident.
The ‘dream butterfly’ happened after the fire incident that separated the twins. I think Sesshomaru was involved in that fire incident at least, and he was only able to save Setsuna. He later raised her for a while and searched for the dream butterfly, upon learning about it.
Here’s a 4-fold reason why Sesshomaru commissioning the butterfly would work, connecting him-Towa-Setsuna-Rin-truth :
Setsuna is deeply hurt with the separation with Towa. Taking her unpleasant memories even if it included him + taking her sleep, will enable her to become strong. Like nothing will hold her back. He then made her return to Kaede and gave her mokomoko. Plus, this also kinda works in a way, being unable to sleep had been an advantage in the battle with Yotsume, on Ep 8. At least there’s one who’d always be awake in the Yashahimes.
The ‘dream butterfly’ thing is a repeated transaction: taking Setsuna’s dreams and giving them to Rin. Maybe in this way, Rin can have a connection with the twins. She wasn’t able to raise them after all.
Sesshomaru sets Towa and Setsuna on a path. He believes one day, Towa would know about the dream butterfly and would act upon it. This will lead the twins TO Rin. That one day, they would find their mom. That one day they would be strong enough to know and face the whole truth.
I imagine Sesshomaru taking the blame for the following: Rin being in the tree + the dream butterfly. He’s lowkey setting his self as a bad character, so that the twins will have the resolve and reason to fight him one day?
Sesshomaru has a plan to free Rin
Apart from what I have thoroughly discussed about Sesshomaru and the dream butterfly, I think Sesshomaru actually CAN free Rin anytime, he’s just holding back (1) because the OG cast has been sacrificing a lot (including Rin), and (2) the Yashahimes need to be lead to a ‘path’ and they need to collect the rainbow pearls.
“If you forsake this girl.. “ could also mean that he is capable of removing Rin from this state in the tree anytime. He just choses not to be selfish because he cares for everyone. That, and they have an ongoing plan with the real Kirinmaru. They’re just waiting for the Yashahimes to be ready.