Tsubutaki is a Phantom Dust character and one of the few females in Phantom Dust. She feels she is suffering for some sin, but does not remember what that sin is (this is most likely due to the dust's memory erasing effects). Most of her missions include the condition that she must not die. This can be difficult, given that her arsenal relies on self-sacrificing attacks.
Tsubutaki's side story involves the Gyne sisters. Apparently they are her fallen comerades of a past mission.
Sometimes referred to by fans as, "emo girl", since some people find her name too "annoying" to say/type out.
Tsubutaki jumps in multiplayer, however it should be noted that female jumpers have a longer stagger time after they jump then males do.