Short version:
A stoic girl travels through different worlds in search of her past and her abilities.
Long version:
Ira Erinmode.
That's the protagonist's name, and like her ability, no one knows where it came from.
She arrives in the world of A Certain Magical Index, knowing nothing.
Lost and confused, she stumbles onward.
Under the pressure of survival, she seeks help from an unknown System.
Until the day she leaves.
Her goals are always changing.
Everything she sees and hears gradually helps her find herself.
Human? Elf?
Killing? Saving?
Reason? Emotion?
None of it matters anymore. She only does what she believes is right.
Whatever the ending, may she never have regrets.
