WMG / Katmandu

Serious WMG (SPOILERS!)

Liska's story will end when Leahtrah tells her final tale about her life, either as an old woman or in her deathbed.

This has a lots of sense, since Leah has spent half of her life so far in telling the life and times of her ancestor, and in the last published issues, Leah's children are now college-age adults, so it would had sense for the last issues of the comic to end at the very tailend of Leah's own life.

• Averted: The epilogue episode shows that Leah became a museum guide later on in order to other people know about the life of her ancestor.

Funny/Crossover/Meta WMG (Spoilers)

Liska, Hesta, Rial, Pyndan, Quiet Bird and Rakon will become Heroic Spirits after their deaths.

Considering the deeds they did during the comic, it wouldn't be farfetched if they become legendary figures in their time worth remembering to the grade they end up in the Throne of Heroes, so they could be summoned as Servants by someone else centuries later after their deaths. This is especially relevant, considering that Liska's spirit appeared to help Thorin in the "When Warriors Die" sub-arc, which could give that possibility. There's some problems and quirks on having any of these characters as Servants though:

• Considering Liska hated slavery with a passion, on the grounds she was a slave herself, the sole Irony of her becoming a Servant, basically the slave of someone else, wouldn't be lost on her. The same goes double for Rial, considering he was a slave too.
• Due to their personalities, Liska would be undoubtly a Saber-class Servant, since she uses knives and bladed weapons, not to mentions she fits the personality of a Saber almost perfectly, including physical looks if we use the most famous Saber as a reference, Artoria Pendragon. On the other hand, Rakon would be a Berserker Servant for obvious reasons, if we use the other well-known Berserker as a basis, Heracles. Likewise, Hesta and Pyndan would be a Lancer-class Servants, as their main weapons were spears and having the personality of one, while Rial would be an Archer for obvious reasons. Quiet Bird would be Caster-class Servant, if we use Geronimo, who is a Native American like the latter, as a basis.^note It should be noted that this could be applied exclusively to either the regular Fate or EXTRA continuities; in the Fate/Grand Order one, they could be classified as members of the "Foreigner" class, whose members are either other aliens, eldritch beings and even anthropomorphic representations of non-living beings, like the space probe Voyager 1.
• If we consider spin-offs like Fate/Grand Order, there's no hard rules on using non-human Servants, considering Lü Bu's horse, Red Hare, has appeared as a Servant before, through the whole franchise mentions that Earth-based Heroic Spirits are the main protagonists. That doesn't mean someone can't summon a Heroic Spirit from another planet, if we take into account they are basically alien anthropomorphic felines from another world, and they could be bound by either the same rules used by the Earth-version of the Throne of Heroes or its equivalent in the planet Katmandu.
• Whoever human Master who summons any of these characters as their Servants would had a very hefty advantage against any other Servant from Earth's history, regardless their class: One main weakness of the Fate Servants is, if someone knows either an enemy Servant's real identity or any important detail about its historical backgrounds, including how they died, that info could be used against a rival Servant in order to destroy them. The Katmandu Servants, on the other hand, wouldn't have that weakness because, since they are aliens, neither their enemy human Servants nor their Masters could know any vital information that could be used against them.^note The same goes in reverse for the Katmandu's characters, since they would be completely in the dark about human story beyond the basics, like, as an example, knowing how to exploit Achilles' most famous weak spot, so that, even if they know his real name, that would worth squat for them, unless their Master inform them about that weakness first, assuming, of course, either Achilles or his/her Master doesn't kill theirs first. Obviously enough, if they are summoned by a feline Master in the planet Katmandu, it would be fair game for everyone else there instead.^note The opposite works for their Earth counterparts if they're summoned either in Katmandu or any other planet with a similar version of the Holy Grail War. Even with those quirks, however, Liska, Hesta, Rial, Pyndan and Rakon as Servants would be still vulnerable against Servants using very powerful magic, like any character from the Caster class, or people using dirty methods to win, like Kiritsugu Emiya. And it would be better not to talk about facing enemies outside their league, like the aforementioned Berserker Heracles, Gilgamesh aka The King of Heroes, or anything from the infamous Heaven's Feel route, especially Dark Sakura, Saber Alter, and the Aŋra Mainiiu.

Liska was a Puella Magi and the Goddess is Kyubey (or another Incubator) in disguise.

Considering Kyubey has been working for centuries in many places of the universe, not just Earth, that means he was manipulating Liska, and also whatever female warrior he could get in his paws in order to harvest enough souls. Considering the blessing the Goddess gave to Liska in order to her to become a warrior, and the Sadistic Choice she gave to her, it's very likely Kyubey either impersonated the Goddess of the planet Katmandu, or he was the Goddess all the time, and Liska basically made a contract with Kyubey, screwing her life along the way. Considering what happened with her at the very ending of the comic, it's very likely either Kyubey, or one of his own kind, manipulated Liska's life in order to became the greatest Puella Magi of her world, at the price of also destroying her life, and very likely, the lives of millions of people who died in the centuries-long war between the Velites and Hoplites, the one which Liska could had an influence in causing it.

To be completely fair, it's very likely Liska gave Kyubey the middle finger to him and his whole race at the very end of her life because not only she managed to die in her own terms, she also managed to reach elderly age without too many problems, and the only reason she died was because of a Diabolus ex Machina situation, very likely manipulated by Kyubey in some degree, in order to had Liska to fulfill her destiny, but she managed to preserve her own soul somehow at the very end, something which was also done by Madoka Kaname on Earth centuries later, and becoming a Heroic Spirit along the way, in the same way Madoka became a goddess at the end. That leads us to the next point...

The titular witch from The Witch of the Woods sub-arc is a minor witch and Klikatat is another Kyubey in disguise.

It's very likely that witch was really a honest-to-god witch, shaman or anything in that line who was corrupted by a Kyubey/Incubator, through for some reason she wasn't powerful enough to became into the most dangerous variety that appears in the Madoka Magica franchise, turning herself into a Gollum-like being instead, while Klikatat, aka Kyubey, tried to warn Liska that she is Living on Borrowed Time.

Homura Akemi, Madoka Kaname, and Kyoko Sakura are human reincarnations of Shaygin, Liska, and Hesta respectively.

This might make some sense if one views these characters on this way:

• Considering Homura's personality in the whole franchise and her utter dedication on saving Madoka, and, considering also Shaygin's personality towards Liska, and that if we take into account what very likely happened to her after Liska died during the final battle against Rakon's loyalist forces (see above in the first point regarding PMMM for more details), it's very likely Shaygin, after her death by old age, sickness or despair after she saw Liska dead, her soul wandered the universe until she found planet Earth and she reincarnated into a human girl from future-era Japan named Homura Akemi. While Homura very likely doesn't remember her previous life as an alien feline girl who was married with another woman, it's very likely Homura inherited her love for Liska, since she is very likely to had reincarnated into Madoka, through Madoka herself very likely cannot remind her past life as a legendary warrior, but she inherited her love for "Shaygin", now Homura. And this time, Shaygin, in Homura's body, will make Kyubey and the Incubators pay harder for killing her beloved husband, no matter what it takes to her.