grabs black wing

That boy’s right hand seemed to have the effect of negating any supernatural power.
However, because of limits there were cases where massive powers that couldn’t be
negated completely ended up only blocked by the right hand. From what she had seen,
Fiamma’s special giant sword had taken a while before it was erased completely.
Normally speaking, being unable to negate something completely... should be a
disadvantage for him.
However.
Just now, that teenager used that flaw to deliberately grab a black wing he couldn’t
negate completely. Then twist the wing to make the attacker lose his balance, and create
a small safe area when he was surrounded completely by the black wings.
Negation and disruption.
Matching his opponent’s strength, and using his ability for the maximum benefit.
Had this cruel war provided an opportunity to greatly enhance that teenager’s power?
However.
(With only that... is it really possible to have gotten out of that situation...?)

- Toaru Majutsu no Index Volume 20, Chapter 4 Part 5