You are currently being carried by Shirou, but at your request he carries you over to Taiga, where you query Raising Heart about Jewel Seeds.
[Current Jewel Seed Serial: VIII, XIII, XXI]
So, Taiga didn't seal it? The girl must still have it, but why can't you detect it? Maybe you can get some answers from the girl herself.
Shirou walks you across the room, where you notice that she's been stealing glances at you, and muttering to herself. When your head turns towards her, she stiffens, then jerks her head away in a huff, eyes closed.
Ah...haha...We...seem to have gotten off on the wrong foot. So, can we maybe, start over? My name is Yuuno Scrya, and my assisstant talking to your device is Fujimura Taiga. This is Emiya Shirou, who is letting me stay here while I heal my injuries. Could we ask your name?
"...Rin." she allows, "...My name is Tohsaka Rin, and I am the Second Owner of Fuyuki City."
Thank you, Ms. Tohsaka. I am an archeologist that specializes in ancient artifacts in my culture called 'Lost Logia', and I'm sorry to say that a large collection of them were scattered across this area. In fact, the Jewel you used earlier, I believe it to be one of the artifacts that was lost, do you know what happened to it? We can't seem to locate it again.
She finally regards you with a sideways glance, and is that a hint of re...
"Ah. So you call it a 'Lost Logia', hmm..." her gaze turns speculative, and maybe a bit calculating, "Why are you looking for it, again?"
...because if they are left unaccounted for and to run free, they could possibly cause a disaster. Even just one used improperly has the potential to cause serious damage to the planet, at the very least to this city.
Her facade cracks a little at that revelation, but she recovers somewhat quickly. "So, they are dangerous, you say."
You just nod seriously at this.
Now looking a little worried, and looking like she's debating something with herself, eventually she hesitantly rolls up the long sleeve on her left arm. Shirou gasps audibly at the sight of her arm, which is covered in pulsing, blue, circuit-like designs from the base of her elbow to her hand, on the back of which is embedded the unmistakable blue diamond shape of a Jewel seed.
"Do you know what caused this?"
Your head perks up as you examine her arm ...How? How did this happen?
"My family specializes in Jewel Magic, and I was experimenting with it, because I thought it was just a Prana-filled gem. Then there was a flash of light, and my arm started to feel like it was burning up, and I don't remember what happened next. I woke up a few hours later and this had happened." Her demeanor seems normal, but her voice is shaky. "I can't get it off my hand, but it doesn't hurt anymore."
[...]
[ ] Try using Raising Heart?
--[ ] Scan?
--[ ] Seal?
[ ] See what you can do about it?
[ ] Humility.
[ ] Something else?