SA7: Silent Ability Seven

On her way home from high school, Yuuki Ayaka is attacked by a group dressed entirely in black, forced into a car, and taken. The group is called "unknown" — a global criminal syndicate whose members each have a unique ability. Her parents are prominent researchers, and unknown wants their findings. She is rescued quickly by five men who identify themselves only as ARK — and who possess abilities that look very much like unknown's. Who ARK actually is becomes the more pressing question.