In the northeast of the MU Online continent, there is a land where a race that had the most advanced civilization lived before there was any civilization on the MU Online continent. Deep underground on an island, they built a kingdom called "Kanturu". Through years of research and experimentation to find ways to survive in a sterile environment, they were able to develop advanced technological, biotechnical, and scientific skills. In addition, they used the magical energy of the magical kingdom "Arka" to develop a highly advanced system. Under this system, the people of Kanturu built an underwater city called Atlans. Atlans' rich resources allowed it to grow and develop beyond Kanturu.

The people of Kanturu lived in contentment with their civilization, while troubles were happening in the shadows. Using their biotechnological skills, they created various life forms, causing the ecosystem to collapse, which accelerated the desertification of Tarkan, and now life forms roam the Tarkan desert. Among the life forms created by the people of Kanturu were beings with intelligence similar to or higher than humans, who understood and felt anger at the actions of the people of Kanturu. These beings rebelled against their creators and began to fight for their rights to survive, causing Kanturu to fall apart from within.

During the year 1870 Lugard, also known as the year 1010, Kundun of MU was resurrected and expanded his forces beyond the continent of MU, to Kanturu. As a result, Kanturu's vassal state, the Atlans, was also attacked. However, due to internal wars between the people of Kanturu and their rebel lifestyle, Kanturu did not have the forces in reserve to help the Atlanteans, and the Atlanteans eventually fell into the hands of Kundun. It was only later that the people of Kanturu felt the desire to fight Kundun and tried to find ways to stop his forces, but by this time it was too late. Unable to block Kundun due to a lack of resources from the ongoing internal battle, the thriving civilization of Kanturu was destroyed and faded into history.

Elpis and Jewel of Harmony

After forming an alliance with the magical kingdom "Arca", the people of Kantur continued their research into the essence of forms and the creation of hybrid life forms by combining the powers of different species using the magical powers of Arc and their own technology. However, the main medium used to create hybrid life forms, the Harmony Jewel, is "unusable" in its natural state, so the people of Kantur were unable to summon the power of harmony from a complete jewel, resulting in strange-looking hybrid life forms or ones with few abilities. Thus, the people of Kantur began researching the Harmony Jewel as well as hybrid life forms, and after many years of research, they discovered a way to change the Harmony Jewel into a jewel "able to use" its state. Having been given the opportunity to use the energy of the Jewel of Harmony, Dr. Jade, Kantur's top biotechnology researcher and an expert in creating hybrid life forms, decided to create a more ideal and most perfect life form using the Jewel of Harmony as a host, and her first attempt was to create life that had the most perfect brain.

Code ST-X813 Elpis, aka Elpis, demonstrated intellectual abilities that exceeded the researchers' expectations. Modeled after a goddess, Elpis had feminist traits and was considered a daughter by Dr. Jade. Elpis learned much from the researchers and adopted Kantur's technology and vast knowledge.

Inspired by the success of Elpis, the researchers focused on creating a life form with better combat abilities, and eventually achieved the result. Nightmare Code ST-X814, aka Nightmare, was born. However, unexpectedly, Nightmare did not accept the existence of the researchers and its creator, but instead took control of other mixed life forms and began a rebellion to escape the control of the researchers.

Due to the unexpected behavior of the Nightmare, a battle between the people of Kantur and the mixed life forms began, which escalated into an internal war. After a long internal war, the country became poor, and the people of Kantur tried to rebuild the state, but the fighting forces of the Nightmare were too strong, and the rebellion forces were diminished, despite all the sacrifices made so far.

Event start

Notification of the opening of the entrance to the Kanturu Tower is given several times a day. The player can enter the Kanturu Tower through the NPC "Gateway Machine" located at Kanturu Relics coordinates (141,186).

NPC "Gateway Machine"

Time of the event:
- At any time

Rules:
- A maximum of 10 players can participate in the Battle of Kanturu.
- Only players who have the Moonstone Pendant can move to the Kanturu Tower and participate in the battle against the Nightmare forces.
- The Moonstone Pendant can be obtained by hunting monsters in Kanturu Relics.
- The Moonstone Pendant can be placed in a ring column.

Moonstone Pendant	Entrance

Stage - 1, 2, 3:
- After two minutes of waiting for the reception, you must kill 50 monsters. If you manage to kill 50 monsters, Hands of Maya will appear and you will fight against him. If you manage to destroy Hands of Maya, you must wait another two minutes.

Mission failed:
- All players fighting are dead.
- Which is within the time limit, since 15 minutes have passed, no player has killed Hands of Maya.

Left Hands of Maya	Right Hands of Maya	Maya Tower

Stage 4:
- After you automatically enter the Kantur Tower, wait 30 seconds. After Nightmare shows his abilities, everything will begin. You must show your abilities against 40 monsters that guard Nightmare. Your task is to kill him.

Nightmare	Kantura Tower

NOTE:
- Nightmare has a tendency to teleport.

After eliminating Nightmare, after 10 seconds a path will open leading to the Tower of Complete Refining, which will be open for 23 hours ("no fixed opening time").

NPC "Elpis"	Refining Tower