Her ability is Meltdowner (原子崩しメルトダウナー Genshi Kuzushi (Merutodaunā)?, lit. "Atom Breaker") , which converts electrons into unstable destructive matter that is said to be in a state between particles and waves. She can use her ability to fire up to four beams at once, create a defensive shield that can melt/disintegrate steel, and supposedly her ability even grants her the ability to turn into an intangible energy, allowing her to phase through attacks. She has also demonstrated to have some control over electricity when she redirects Mikoto's electric attacks. It is revealed in the opening Sister's noise that the color of the beams is green.
Her ability has two major disadvantages. First, it is highly unstable, as demonstrated when her anger towards Hamazura Shiage fueled her to use too much power and she blew off her own left arm from wrist to elbow.[5] Second, her ability can only be used on one target at a time. To compensate for the former, she has to consciously limit herself when using her ability and to compensate for the latter, she carries around silicon cards that can disperse her individual laser shots into multiple ones, this attack is labeled by Mugino as Silicon Burn (拡散支援半導体シリコンバーン Kakusan Shien Handōtai (Shirikon Bān)?, lit. "Diffusion Aid Semiconductor").