the way i would like the lore to evolve is something like this darkins are an ancient alien empire stretching wider than targon is today.
much like the young targonian empire, they used to carry and wield powerfull arcane energies and are the first
who understood how it was weakening the threads of reality and allowing the void to slip through different dimensions
the darkins opened the first void scars(portal),after a long war with the void,
they finaly were able to push it back to its own dimensions and close the gates in between them.
the darkins renounced to wileding arcane magic reverting their society to weaker but
less dangerous bloodmagic,and stopping their expansision in the cosmos as most worlds in their sector were left lifeless.
somewhat later and further ..targonians rise to power following the same mistaken road
the darkin took millenias ago and start messing with powerfull magic on runeterra(ascending people using the powers of stars).
This attracts the attention of the darkin who come to stop them before it attracts the attention of the void .
Targonians accept to hear the darkins but decide not to listen to their advice showing them how Asol is succesfull in closing a void scar...and stating the if the void ever gets freed ,it would be in big trouble facing targon's might...
the darkins leave mount targon but do not return to their homeworld they descent to runeterra and try to teach humans the way of blood magic...some learned and mastered it even worshipped darkins as gods
targon was made aware of this and isnt happy with the darkins interfering on this world so they gave the first blow slaughtered those they could captured the darkins they couldnt kill ,the rest of the darkins that werent yet on runeterra understand that the targonians and the mortals on runeterra
will not stop their rituals and if the void is released it will consume everything
so the bulk of the darkin forces try a full on invasion of runeterra a fight they lost and targons won with the help of the ascended they created...the remaining darkins now hold these feelings of hate and revenge against those they tryed to protect but betrayed them and led their ancient races to almost extinction.
i think it gives more flavor to the darkins then just being evil ...and also shows the darker side of targon wich we all know exist
and as you know story is only told by the victorious and since darkins are almost extinct none can really argue or deny
from the comic: blood magic we gave that to you
this is how we are remembered demons
i claim the blood price on your species
what you guys think