Triage X, Vol. 1

Mochizuki General Hospital boasts some of the most well-trained (and
well-endowed) nurses in town. But though these ladies spend much of
their day battling sickness, their after-hours are spent fighting a very
different sort of disease...Under the leadership of the hospital
chairman, a handful of staff members and local teenagers form a group of
mercenary assassins, targeting the "cancers" of society and excising
those individuals before their wickedness spreads.