Ren Amaki

Ren was a high school student before he he failed to save his childhood friend in his old world and was instead killed in the process of her rescue. Ren initially mistook the world he was summoned to to be exactly like the VRMMO game from his world "Brave Star Online" where Level came first and Status Boosts second in priority making his strengthening method extremely inefficient also leading to the collapse of his party. He acts like 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. He is the youngest hero.

Personality
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 alone. His particular attitude to this 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 also seems to actually recognise 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 gave a proposal to help resolve the situation 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 crying Naofumi. After joining Naofumi, Ren became overflowing with enthusiasm. The goal of fighting the wave has ignited a flame within his soul.

After his party was slaughtered by his, Itsuki and Motoyasu's, act of releasing the Spirit Turtle, his personality ends up taking a significant blow. His confidence has noticeably declined, and he has begun to realise that the world isn't a game and that his comrades are in fact dead and not coming back. To escape his guilt over this, Ren tries to blame them, stating they were too weak and got killed, something Naofumi and Eclaire both believe is a sign of his selfishness. He breaks further when Naofumi calls him out on this and also blocks his attack, he winds up calling it a cheat that the Shield is so powerful and runs off in anger. Later, due to his distraught state, he was easily manipulated by Malty, who gave him false words of comfort that he desperately needed to here. He wound up stripped of his belongings by her, abandoned and finally snapped completely, succombing to the Curses of Greed and Gluttony.

While possessed by greed, Ren becomes a bandit leader and organises 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 succombing to Gluttony he gets much worse, and 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. He also becomes steadily more open, though he is still rather timid compared to before and no longer puts up any elements of false confidence or a cool facade, he even notes outright that he wants to get to know the other heroes and get along with them from now on. He is no longer obsessed with power, and diligently began studying under Naofumi to learn the world's language. He has also resolved to help out the village any way he can and asked Naofumi to be given a job there. Finally, he has expressed regret over his past actions, especially when learning that the dragon he killed was acting as an adoptive father to one of the girls in Naofumi's village, Wyndia, who became a slave as a result of said dragon's death. After apologizing to Wyndia, and being slapped and told off for his trouble, he has began to interact with her roughly as frequently as Eclair, and is implied to have feelings for both of them.

Abilities
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Magic
Ren specializes in water and support magic. There are some water spells that can heal.
 * 「Magic Enchant」: It’s a magic sword. After casting, it endows magic that has been received, and Ren can slash at enemies while it improves the strength of his magic for a little while. c273
 * 「Fast Resist Fire」: Fire support magic, that increases fire resistance.
 * 「Revelation Magic Enchant X」: Magic enchant is able to absorb magic attacks, and augment their abilities into the sword. Dragon breath is included in the attacks it works on.

Legendary Sword Skills

 * 「Hundred Sword (ハンドレットソード)」
 * 「Thunder Sword (雷鳴剣)」
 * 「Flash Sword (閃光剣)」
 * 「Meteor Sword (流星剣)」
 * 「Transfer Sword (転送剣)」
 * 「Rakshasa Meteor Sword (羅刹・流星剣)」
 * 「Hidden Sword (ハイドソード)」
 * 「Setsuna Ryugoroshi (刹那・竜殺し)」
 * 「Chain Bind (チェーン・バインド)」
 * 「Change Chain (チェンジチェーン)」
 * 「Gravity Sword (重力剣)」
 * 「Aqua Seal (アクア・シール)」
 * 「Flame Edge (フレイムエッジ)」
 * 「Flame Edge, Meteor Sword X (流星剣Ⅹ)」: The blades edge is basked in a red light. A dark crimson shockwave shoots towards his opponent. c327
 * 「Phoenix Gale Sword (鳳凰烈風剣)」
 * 「Instant Dragon Slaying」: A fighting spirit in the form of a dragon.
 * 「Gravity Sword」: Ren’s sword changes to a dark transparent material as he slashes his enemy. And the enemy collapses as if a force was pushing them towards the ground. It uses Gravity to obstruct an enemy’s movement.
 * 「Soul Steal」: A blue light flies out of his target, and assimilates into him. Ren’s blade robs targets of their ability to move, and he follows up with this skill.

Curse Series Skills

 * 「Guillotine」: Chains come from the ground and bind this opponent's body, moreover, the thorns on the chains pierced into his opponent's skin. Then an enormous bladed execution tool appears above him.
 * 「Goldaufstand」: Ren raises his sword to the heavens and out of nowhere, gold and silver treasures gather, forming a human shape in the air. Profoundly ominous, it is a gold statue made with extremely bad taste. The compensation is the caster's possessions.

Swords
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 * Spirit Turtle Sword
 * Spirit Turtle Katana: A leveled up version of the Spirit Turtle Sword.
 * Comrade Growth Adjustment (Small)
 * Comrade Sword: A strangely shaped sword, which looks like a bundle of strings strung around each other countless times. Honestly, it doesn’t look strong at all. Ren’s trusted comrades are Ecliar and Windia. It's possible his comrade growth correction stacked with Noafumi's slave one.
 * Sword of Rage

Chronology
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The Rising of the Shield Hero
Devil of Shield Arc c1-78

Cal Mira Island Arc c78-114

Spirit Turtle Arc c115-130

Ren and his comrades successfully cleared the Wave of another country, and then headed to the town the Spirit Turtle was sleeping in to search for greater strength.

Thinking of his game, and what happened in Update: Episode 7, The Assault of the Spirit Turtle. According to Ren, the Spirit Turtle was going to be the mastermind behind an even greater calamity, so it was best to kill him off early. In the near future, a plague would have struck that land. The people would fall one after the other, and the cause of that would be the Spirit Turtle. He would manipulate their corpses and create an undead army with his powers of mind control. Apparently, in the games Ren played, if he didn't act fast a large calamity would befall this land. This event was big enough in scale to cause the fall of nations and the formation of several counter-measure organizations. That’s why Ren’s main goal was the prevention of this disaster. The boss was supposed to be beatable at level 60. Since Ren was over 80, he thought it wouldn't be difficult.

The reason he acted without the country’s consent was that in the game he played, the Turtle’s mind control was affecting the actions of the leaders of countries as well. It seems that it was being treated as a sort of quest. And that’s why negotiations were pointless.

Ren infiltrated a temple slightly outside of the village. Ren's actions were questioned by his party. He explained to them the monster sleeping there had already infiltrated the upper echelon of government and sitting around and waiting for negotiations to finish is pointless. A monk then asked who they were, as he was about to destroy the statue that would awaken the turtle, a group of monks surrounded him. Because they had appeared in the basement of an abandoned temple, Ren was able to conclude that they were under the Turtle’s influence. And destroyed the statue. Ren’s comrades assisted in the destruction of the statue. The monks shouted and raised their weapons. The monks then realized that Ren was the Hero of the Sword. Ren then explained that he was there to vanquish the darkness that sleeps beneath these lands. As they were saying that, the ground begins to rumble beneath them. Ren carefully knocked the monks out and ran in the direction of the rumbling sound.

With confidence, Ren rushed towards the Turtle. While closing in, he thought he saw someone use a skill on the head, but he just assumed it was one of the adventurers fighting it. Thinking that this world’s adventurers wouldn't be enough, Ren raised his sword towards the Turtle. He used「Handlet Sword!」, however, it’s a skill that takes a while to activate. So he stacked on another attack,「Thunder Blade!」. But, the Spirit Turtle was largely unaffected. Ren felt something was off, but he kept fighting. Without giving up, he fought for the people in danger of the beast.

After being defeated, when he was aware of his situation, The Spirit Turtle was already walking away without paying him any mind. Ren was surrounded by the corpses of his comrades. They were cruelly mangled bodies. Destroyed so badly even Ren couldn't identify them. The only thing he could understand was that his party members were all dead.

Ren’s brain could not comprehend the events that had just happened. And Ren’s mind shut down for a period of time. He prayed for the slight chance that, like a game, he would be able to revive them. But no gods would hear his wish, and Ren understood that from the beginning.

After that, Ren rushed through the swarm of Spirit Turtle Familiars, and tried to save as many people as he could, but he eventually lost consciousness. When he regained consciousness, the Spirit Turtle’s reign of terror had already ended.

Slave Supremacy Arc c131-203

New 7 Deadly Sins c204-357

Towards the Legend Arc c357-378

Side Stories
The Christmas of Shield Hero c379-385

The Valentine of Shield Hero c386-402

The White Day of Shield Hero c403-409

The Reset of The Spear Hero Gaiden
Loop 1 to 3 - Tutorial Arc c410-414

Loop 4 - Silt Welt Arc c415-455

Loop 5 - Melromarc Arc c456-574

Loop 6 - Foburei Arc c575-current }}