Hands down and let me say this... Shion had at least met Rumiko.
All because of this scene from "Facing Demons"
Is it possible? Oh never, never!! but it could be that Shion showed Rumiko "kindness"
Because if it turns out that Shion was/used to be a companion bot, probably for the Hashimoto depending, but overall it would make sense that Rumiko, (God I love Rumiko Shimada so much!! where are you my wife!), would treat Shion like her own "person" treating her with kindness for the first time.
Since augh I was right about my beloved wifey, being so sweet, kind, and caring. (Even though she left the shimada clan leading everything to crumble down, which I must know why!?!?)
Anyways I'm getting off topic here.
For all I know what Shion told Mizuki was a lie. Maybe I don't know but something happen with her to think kindness was weakness, because Rumiko kindness only did so much.
No doubt that many people saw disgust that Rumiko was spending with with Shion, getting to know her, being her friend and so on. Shion experienced kindness from a human in years and of course that kindness from Rumiko made her slowly fall in love with her, so imagine this, Shion copied or at the very least tried Rumiko's kindness for the first time in years.
And what the concluded to her was hatred, disgust, humans not liking her, she's done everything right. Everything right, everything she did with her kindness wasn't enough.
Which reminded me of MLP with Tempest Shadow from Open Up Your Eyes. Lyrics which lemme remind you because holy fuck this came to me just now!!
"We all start out the same with simple naive trust
Shielded from the many ways that life's not fair or just
But then there comes a moment, a simple truth that you must face
If you depend on others, you'll never find your place
And as you take that first step upon a path that's all your own
You see it all so clearly, the best way to survive is all alone"
Boom this part of the song screams Shion!!!!
She probably depended on Rumiko's trust and her kindness but where did that kindness lead her?! Nowhere!!!
Although how does this play into toxic yuri for Rumiko & Shion?
I have no idea...Yet. But what I do do know she now this me reaching here, I'd like to think Shion saw Rumiko one day again and was about to approached her until she she Rumiko with Sojiro and the Shimada. Just seeing them being all lovey dovey or something maybe seeing her with the Shimada Elders and noticed how unhappy Rumiko looks, all that kindness drained from her and moreover, Rumiko going on to ignore Shion.
To her kindness was just a mask, a mask of humanity, so Shion basically climb her way up the ranks of the Hashimoto modifying herself along the way. Because where did that kindness lead her? Show her what actually kindness was.
The only person who treated her with kindness was actually weak in her eyes.
Now this all could be wrong but who knows, I'm excited for Shion's lore because she probably as at least met Rumiko once...
(Also I'm praying for Hanzo mythic weapon to have some Rumiko's lore, something anything I need Rumiko lore for season 3 ToT she's so close and my heart is aching and my god guys I'm so nervous!!!)