The More You Know:
Some dialogues are written in Spanish for the sole purpose of flavoring.
A summoning spell is spoken in the mother tongue and shall not be translated.
The history of royal blood and summoning techniques is unknown.
Real-life religions (e.g., Catholicism) do not exist in the story and are replaced by fictional religions.
There are two moons in their world; Mona and Luna
When a summoner dies, the creature they own will be freed or inherited.
The Order of Life consists of sentient beings like Humans, Atlanteans, Elves, etc.