[face=Times New Roman]IMHO there are several lines of evidence supporting a romantic relationship between the two of them.
(1) Notice Alys’s range of facial expressions when Rune invites himself to join the group! At first she appears rather taken aback; then she glances at the protesting Chaz, before finally conceding that they will enjoy his company. Had their relationship been platonic, even a very close friendship, the decision would have been much simpler: “Sure, join us, do!”
After a minor squabble with Chaz, Rune reassures them that he won’t “get in the way”. Alys responds that he has already done so. Reading between the lines, I’d say that his sudden reappearance after a lengthy time apart has left her somewhat perturbed. Again, it would be unlikely to have this impact on her if they had merely been friends.
(2) Alys appears mildly exasperated, perhaps even embarrassed, by Hahn and Saya’s public display of affection in Krup. Her reaction may be influenced, at least in part, by Rune’s presence at the scene. Perhaps it brings back memories that she has tried to push to the back of her mind?
(3) Rune treats Chaz like a child and, on at least one occasion, is also quite offhand with Gryz (“What a braindead kid you are!”). However, he always acts the gentleman in his dealings with Alys. In Tonoe, Rune intercedes after Alys socks Grandfather Dorin for reciting her measurements. “Please excuse him, Alys, the old man didn’t intend any harm…”
Perhaps any good friend (or any gentleman!) would have done the same, but the shot of the two of them in that scene suggests a certain intimacy from days gone by.
(4) Aiedo appears to be full of young men who would like to get to know Alys, but she doesn’t give them a second glance. One of her neighbours even declares her intention of finding Alys a good husband. These snippets of conversation create an impression of Alys as a strong, independent career woman who attracts men, but may be unwilling to settle. Perhaps she has been in love with someone in the past, someone with more depth and intelligence than the young hunters at the bar?
The scene at her bedside in Krup is also suggestive, but the emotions displayed therein could equally derive from a very close friendship. Assuming that the two
were romantically involved, the next question is: what was the extent of their relationship? Again, I’d argue that it was long-term, quite intense and, moreover, that they were probably quite a bit older than is usually suggested. Could puppy love in adolescence create a lasting bond that survives several years’ absence? Not in my experience.
According to the PS Compendium, Rune inherited Lutz’s memories at the age of 15, then underwent strict ascetic training before travelling to Motavia, where he met Alys and the hunter Galf. Galf rescued Alys from highwaymen at the age of 14, and then trained her to become a hunter. I’d guess that both Rune and Alys were training for some time in their respective disciplines before they met – possibly even 5-6 years. So they meet in their late teens /early twenties, spend four years together, and become romantically involved.
Final question: why do they break up? Since Rune appears to be a gentleman, his mission as the “reverent fifth one” is the most plausible reason he might have to leave Alys and return to Dezolis. The Compendium talks about his leaving her to “hasten her independence”, but that sounds to me like a much flimsier excuse! Love happens between individuals who
are independent, and I somehow doubt that Alys was ever clingy or needy.
She accepts Rune’s decision to return to Dezolis, picks herself up, focuses on her career and becomes a renowned Hunter. A couple of years later she takes 13-year-old Chaz off the streets and gives him a home, trains him for three years… and then, out of the blue, they encounter Rune Walsh on their travels, a decade after Alys first met him.
Anyhow, that’s how I’ve developed the theme in my fanfiction, so take it all with a pinch of salt…

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