Arc Strada (アルク・ストラーダ大陸 Aruku Sutoradda Tairiku?) is the main continent background of the series. It is otherwise known as the "Dragon-Rearing Land", due to the continent's shaped of a winged-dragon, it boasts the largest dragon population in harmony with its five million citizens. It is composed of 5 main kingdoms, each symbolizing a dragon organ.
- Lautreamont Knight Kingdom (Heart)
- Chevron Kingdom (Body)
- Zepharos Empire (Gate Jaw)
- Espada Holy Agency (Wing)
- Labrock Commercial Union (Tail)
- Order of the Avalon Knights