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Kireina glanced as her surroundings changed, becoming that of land covered in fire, volcanic earth, and lava… There was even a large volcano firing enormous quantities of lava everywhere.
For some reason, such a technique reminded her of the Fire Salamander Empress' Fire Zone Skill, which she had used against Kireina when she was still a Butterfly to put her at a complete disadvantage.
Thinking about such an old fight, Kireina had grown incredibly strong since then, and such restrictions that the Fire Zone Skill would have caused over her should not work anymore over her body.
However, this was not a Fire Zone Skill, Hephaestus had carefully created a Divine Formation by employing several resources, skills, spells, and divine techniques together, carefully setting them around the area, all to activate a special space that resembled his Divine Realm.
Check "The Protagonist's Sister Is Actually the Strongest"!