

Killstreak is a first-person shooting online PVP game. Through these missions, gamers can vividly experience the thrilling feeling as if they were given a mission and participate in the battle directly in the real battlefield. The 21st century battle provides realistic missions such as operations, taking place on various locations that show realistic modern infantry warfare in the context of the era.

Gaie Arms Fabric (GAF) and Ariel Gunner Industry (AGI) are faced off against the terrorists of the two private mercenary companies. They set out on an immediate rescue operation to save the remaining people. Shortly after the incident occurred, six special mercenaries were dispatched to protect the consulate led by a Bravo team, each secretly operating in the Middle East, from Gaie Arms Fabric, (GAF) and Ariel Gunner Industry (AGI). Countless gunmen carrying guns and grenades broke into the Korean consulate in the Middle East. In the 21st century, there are terrible terrorist incidents around the world. And so, amidst a swirling storm of love, hate, and intrigue, the battle between the two sisters begins. This art, however, requires the heart of a blood relative to work, meaning that the younger sister must kill the elder if she is to have her sworn vengeance. Upon her beloved mother's murder, Saki becomes consumed to the point of insanity with a desperate thirst for revenge, resorting to manipulating the Undead to achieve her goal.Aya resolves to seek out her younger sister, her only surviving relation, while Saki is determined to resurrect her mother using an ancient art passed down through the ages. When her father goes missing, Aya decides to put her skills with the sword to use as an Undead-hunter. Meanwhile, the younger sister, Saki, was raised by her mother, learning to despise her father for abandoning them and taking her sister away. The elder sister, Aya, was raised by her father, who subjected her to rigorous training in the way of the blade. Here we find two sisters who descend from a long line of expert swordsmen, yet were born to different mothers. In the year 20XX AD, Tokyo is nothing but a dystopic wasteland overrun by living corpses known as the Undead.
