Seeing how Koutarou and Elfaria were behaving, Ruth came up with a certain theory.
“...Could this be...”
That theory was that Koutarou and Elfaria had met in the past when Koutarou was returning home from Forthorthe.
Using that theory as her premise, there were a lot of things that started to stick out. And a prime example of that was the Blue Knight's maneuver suit, Koutarou's blue armor.
When Koutarou first put on the suit, it matched his physique perfectly, and there was no need for any minor adjustments whatsoever. At first, Ruth had only thought of that as pure chance, but when she thought about it now, it was strange.
As an archaeologist, Elfaria was supposed to have reproduced that armor based on descriptions in ancient documents. It was easy to think that Elfaria had redesigned the armor based off of Koutarou's measurements in the past Forthorthe, but that wasn't the case.
A few months had passed between Koutarou first putting on the armor and him being sent to the past Forthorthe. It was hard to believe that Koutarou, who was in the middle of his growth spurt, hadn't changed a bit. Just height wise, there should be a few centimeters difference. So if Elfaria really had based her measurements off of an old document, the armor should have had made some adjustments, but it hadn't.
Apart from it being pure chance, Ruth only had one other possibility in mind: Elfaria could have met with Koutarou before starting her work on the armor, and obtained the initial data at the time. That was the only way for her to know what measurements Koutarou would have when he first wore the armor.
“...At this rate, it might not have been a coincidence that her highness's trial was to invade Satomi-sama's room...”
Elfaria was a famed archaeologist, but at the same time she was a specialist when it came to computers. That was because being an archaeologist in this age in Forthorthe required extensive knowledge of ancient computers.
And it was because of that that Elfaria might have made some alterations to make Theia's trial an invasion of Koutarou's room. All she had to do was hack the computer before it decided on the contents of Theia's trial after all. And Elfaria had a strong motive to do so as well.
Elfaria, who had a lot of enemies, would want to put her daughter, Theia, somewhere safe before making any major political moves, like proclaiming disarmament. And if asked where the safest place would be, citizens of Forthorthe would surely reply as such:
Next to the Blue Knight, Reios Fatra Bertorion.
We might have been moving all according to her majesty's plans all along...
Ruth started to suspect that everything was according to Elfaria's plan. Raising Theia as a Blue Knight fan and choosing Ruth as her guard. It might all have been to protect Theia, or to have her meet with Koutarou.