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My companions died trying to bring peace to this world. I want to fight to make sure they didn't die in vain.

—Ren, Volume 11, Epilogue

Ren Amaki (天木錬 Amaki Ren ?) is the Sword Hero and one of the four holy heroes summoned in Melromarc.


Ren is a person who acts cool and tries very hard to portray a loner's image. He runs his party like a guild, only working with the other members when the prey he seeks to kill is too strong for him to hunt alone. His attitude towards his comrades is that weaker members should work to individually increase their powers to catch up to the stronger ones.

Like the other heroes, Naofumi excluded, he is initially under the impression that the world they've come into is a game, and he stubbornly refuses to think otherwise. Unlike Motoyasu and Itsuki, Ren seems to actually recognize to some extent the consequences of his actions, as he understood it was his fault the Zombie Dragon caused a plague. He is also more reasonable than Itsuki or Motoyasu, as he believed in the possibility that Naofumi was telling the truth when he claimed that Princess Melty was under his protection and not his hostage, and tried to propose an idea that would help the situation resolve peacefully. He, alongside Itsuki, also stood up for Naofumi after Malty and Motoyasu tried to take Raphtalia from him via cheating, and called Motoyasu out for believing Raphtalia was brainwashed even when they saw her comforting an obviously deeply upset Naofumi.

While possessed by greed, Ren becomes a bandit leader and organizes them to amass wealth, he also defeats people on the road and steals their stuff, but fortunately doesn't kill them. He becomes obsessed with increasing his power. After succumbing to Gluttony this gets much worse, and he is willing to kill people to absorb EXP from them and grow stronger. His obsession with power is however either hollow or just an attempt to escape from reality, as when asked the reason for it he can only express the purpose given to him by others: saving the world. When he is finally defeated, he reverts to a broken, but otherwise normal, Ren.

After being freed from his curses, Ren decides to learn under Eclair and try to save the world his late comrades loved so much.


Ren has a black hair with pretty handsome face and was described by Naofumi to be really suited to be a protagonist of dimensional-cross stories from manga or anime bishounen. He always dresses in black or some other dark color. Later after a two-year time gap when Naofumi's pick him from his world, he grew up to be taller and has a sturdy body due to a result of a never miss training every day. He also has a mature-handsome appearance which perfectly labeled as an biseinen.


Legendary Sword Skills

  • Hundred Swords: Hundreds of sword appear in thin air and fly at their target
  • Thunder Sword
  • Shooting Star Sword
  • Crimson Sword
  • Transport Sword: Allows the user and party members to teleport to a place they have visited and registered before
  • Flashing Sword: The sword creates a bright light, blinding targets in a certain distance
  • Dragon Buster: Flames burst out of his sword and take shape of a dragon. This skill is more effective against dragons

Curse Series

  • Hide Sword
  • Assassinating Sword
  • Maneater Shooting Star Sword
  • Guillotine: Chains wrap around the target's body and turn into barbed wire piercing into the target's skin. A Guillotine is summoned out of thin air and the blade drops onto the target.
  • Gold Rebellion: Summons a sculpture made out of gold


In his previous world, Ren was a high school student. One day on the way home from school, he was caught up in a murder case, all he remembered was him saving his friend and the criminal getting arrested. When he woke up he found he had been summoned to another world as one of the Legendary Heroes, the Sword Hero.


Ren initially made the mistake of thinking that the world he was summoned to was exactly like the VRMMO game from his world "Brave Star Online" where Level matters more than Status Boosts which made his strengthening method extremely inefficient this also led to the collapse of his party. He acts like a cool loner but he really does care for his comrades. However, he doesn't get close to them because he is terrible at team play. He carelessly killed a dragon which caused a plague as well as other problems.