There are just too many similarities at this and at this point it feels just like a retelling of Star Wars let's see we can find them all.
Clare = Luke Skywalker
Organization = Empire
Teresa = Obi Wan
Irene = Yoda
Yoma/AB = Sith
Claymore = Jedi
Rubel = Lord Vader
Dae = Lord Sidious
Teresa takes Claire under her wing after she is forced to leave her home due to yoma
Obi Wan takes Luke under his wing after he is forced to leave his home due to the empire and indirectly sith
After Teresa is killed Claire trains under Irene
After Obi Wan is killed luke trains under Yoda
Jedi/Rebel remnants challenge the Empire
Claymore remnants challenge the organization