Bell Hydra is a powerful sorceress who first meets Fuyumi and Staz when they pass through her gateway between the Demon World and Earth. She specializes in spatial magic—the ability to open frames or portals in space that let her travel instantly to almost anywhere she wants. Unlike the Hydra, which can teleport freely, Bell needs an actual frame to jump through, though she can open one at will.
Her magic is incredibly versatile. She can peer through her portals like windows to spy on people, redirect both physical and magical attacks, and even transport others through her gateways. More brutally, she's shown she can use spatial magic as a weapon—she once captured Akim by closing a frame around his limbs. Throughout the series, Bell plays a crucial role in helping resurrect Fuyumi.
What's interesting about Bell is that she often uncovers sensitive information about the darker schemes unfolding around her, but she rarely shares what she knows. She tends to keep things to herself, presumably to use later to her advantage. This secretive nature makes her a somewhat enigmatic presence in the story despite her important role.
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