Portals

Portals (ポータル Pōtaru) is the Quirk used by Ankoku
Description
As the name suggests, this quirk opens portals, that are controlled by Ankoku. To open the portals, Ankoku uses her hands, and puts her fingers together, then pulls them apart and this will open a portal, wherever Ankoku wants it to, to close said portals, Ankoku just needs to line her fingers up and bring them together. This quirk has no offense power, and is only used for support and defense. To open a portal on her own body, Ankoku will have to draw a circle on her body, where she wants the portal and it will open there. 
Weaknesses
Like mentioned above, this quirk is purely support-based, but this is also the most helpful part of the quirk. The biggest weakness is that, if someone is quick enough, they can dodge any portal, Ankoku opens to teleport someone away, and attack her.