Crime syndicate ovisu uses the biologist whom I abducted in a closed military affairs research facility, and the experiment of the biological weapon and information that I develop it enter. The government decides dispatch of mission accomplishment corps "S.O.R.U." (Special Operation Raid Unit) under direct control. Be experts of the Sennyuu which let many duties succeed in Riona which is the only female of "S.O.R.U." by the strong mind and battle ability that they cannot imagine from youth and good looks of the So. This duty is the destruction of the biological weapon and rescue of the biologists. Were duties, but it was thought that it was not a particularly difficult duty alone. Riona which succeeded in Sennyuu without a difficulty at night in a military research facility of the duty accomplishment. Keep ammunition, and make a surprise attack on watch by the flinging oneself at the enemy war that used inborn adaptability to the maximum, and aim at the most deep part of facilities.
