One weakness of Paper Masters (revealed when the Three Sisters are in the Gifu prefecture hot springs) is that water can dampen their ability to control paper. Yomiko Readman and Sunny Wong have some way of overcoming this, but the Three Sisters do not (Joker later uses this weakness against the girls when he confronts them in the National Diet Library). However, as seen at the end of Twilight of the Papers, Anita forms and holds an underwater bubble to help her and Nenene escape from Dokusensha as the building sinks into the ocean (due to a bomb that Joker had planted).