There was a group of about 20 people in a dark cave. There was a room that separated these people. There were only two people in the room.
One of them was the woman in her 30s with a very big beauty with silver hair.
The other was a wild man with silver hair, 2 meters tall with a large black ax on his back. These two were siblings.
The level of the two was passed as 5th Star Mystic. Both siblings had great authority in the Black Hand organization. They were directly in control of their secret location and many other places.
No one knew the names of either of the brothers. The male was known as Silver Axe Mystic. The female was called Silver Whip Mystic.
Their true power came to life when the two siblings fought together. That's why they weren't so separated.