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|“||We have to do it for the good of our world. You’ve got to die.||”|
—L'arc Berg, Volume 5, Chapter 12
L'arc Berg (ラルクベルク), also known as the Scythe Hero (鎌の勇者), is the wielder of the vassal scythe and one of the vassal weapon wielder of the other world beyond the Wave.
He is care free and laid back taking a very relaxed path to every problem. He is, according to Naofumi, an older-brother kind of character. Even though he has become a king, he likes his freedom.
L'arc has spiked red hair and is muscular. He has a tattoo of a scythe on his upper arm and appears to be handsome.
L'arc is the king of a small country that is home to Kizuna the Hunting Hero. His dad died and the crown was passed to him.
He was first introduced when Naofumi and his companions boarded the ship to sail to Cal Mira. Together with Therese Alexanderite they first didn't believe that Naofumi was the Shield Hero and so fought together against the wave. During the fight against the wave, he concluded that Naofumi really was a Hero and tried to kill him.
They still couldn't completely beat Naofumi even with the help of Glass and so had to return to their own world.
In the next wave they again traveled to the other world. When they wanted to return to their own world they encountered Kyo, who was another wielder of a vassal weapon, but tried to rule the worlds instead of following his mission. Thus they stayed in this world and tried to stop him.
During Naofumi's fight against the Spirit Tortoise he met Naofumi again. He first encountered him when Naofumi tried to travel to the heart of the Spirit Tortoise. After that, they met him during the battle against Kyo. He then explained Naofumi, that he didn't have the intention to fight against Naofumi anymore, but that he had to fight against Kyo.
Because Kyo managed to escape after the battle, they tried to chase him in the other world. After they were transported to L'arc's world, Naofumi and Rishia were separated from the rest and so they tried to search for them.
They landed in enemies land and were thrown into a prison. Using Raphtalia's magic they managed to escape. After being reunited with Kizuna and Naofumi, they were lectured by Kizuna, who heard what they had tried to do in the other world. After that they again fought against Kyo and finally beat him.