A young boy who was summoned to another world and became the Shield Hero. After overcoming numerous hardships with his companions, he is granted his own territory. He’s distrustful of others but has a kind heart and manages to unite the Four Cardinal Heroes in preparation for the battle against the Phoenix, one of the Four Guardian Beasts.

A demi-human girl who was chosen to be the holder of the Katana Vassal Weapon and became the Katana Hero. Devoted to her role as Naofumi’s sword, she shares deep mutual trust with him. A descendant of the royal family of Q'ten Lo, she is mistaken as a contender for the throne by its assassins.

A filolial queen, selected to be the next ruler of the race. Actually in bird form, she’s very cheerful and loves to sing while she pulls the carriage. She is very close to Melty, and they are currently on a training journey together.

Naofumi’s comrade who is shy and introverted but learning Hengen Muso swordsmanship has helped her to grow at a surprising speed. In a one-on-one duel with Itsuki, a mysterious weapon resembling a Vassal Weapon of the Projectile type chooses her, leading to her victory. She now stays by Itsuki’s side as he struggles with the Curse.

The Sword Hero. After he failed to defeat the Spirit Tortoise, he fell into despair and turned to a life of thievery. However, he eventually acknowledged his past mistakes and reconciled with Naofumi and the others. Now, he devotes himself to sword training with Eclair while focusing on healing from the Curse. Though acting self-centered, he has grown to value his comrades deeply.

The Spear Hero. After being used and cast aside by Myne, he was comforted by Filo and became completely devoted to her. He affectionately calls Naofumi “Father-in-law” and gained overwhelming power by practicing the enhancement techniques Naofumi taught him. He now secretly protects Naofumi’s territory from the shadows.

The Bow Hero. After losing to the Spirit Tortoise, he wandered from arena to arena and eventually fought against Naofumi’s group, where he was defeated by Rishia. She now looks after him as he works to heal from the Curse. He has a stronger sense of justice than most people, and it can sometimes cause him to go out of control. But he’s someone who truly wants to help others.

The Second Princess of Melromarc and first in line for the throne. She serves as acting lord of the Seyaette territory, working daily, so that she can be a bridge between humans and demi-humans. Though she’s best friends with Filo, they rarely had time to spend together. So, at Naofumi’s suggestion, the two have now set off on a journey of training and growth.

A knight and the ruler of the Seyaette domain. She has a stern personality and prefers to study the blade instead of how to rule her lands. She currently trains Lurolona Village in the ways of the sword. A skilled warrior who once defeated the Sword Hero, she now trains Ren after helping him recover.

The former First Princess of Melromarc. She was banished from the royal family for treason and her attempt to assassinate Melty, and had her name changed to “Bitch.” Manipulated the other three heroes and tried to bring Naofumi down. Nobody knows where she is right now.

An orca demi-human from a family of royal bodyguards in Q’ten Lo. Protected Raphtalia’s parents as they fled to Melromarc. She’s like an older sister to Raphtalia. She looks like an easygoing lady who loves to drink and excels in both lightning magic and fighting at close range.

A White Tiger demi-human boy. He trains diligently with his younger sister, Atla in Naofumi’s territory. Though he cares for her deeply, his overprotective nature often leads to conflict, and he frequently finds himself outwitted or overpowered by her.

A White Tiger demi-human girl. Once blind and unable to walk due to illness, she was saved by Naofumi and now adores him. Her sharp mind and strong will allow her to resist her brother’s interference and grow ever closer to Naofumi. She possesses a natural talent for the Hengen Muso Secret Techniques.

A girl who appeared in Lurolona Village seeking Naofumi. She hails from a destroyed parallel world, where she was the Vassal Weapon Hero of the Sewing Set. Due to her Vassal Weapon’s translation feature being broken, she communicates through her familiar. Though slim, she has an enormous appetite.

The representative of the Shusaku race, one of the four most powerful demi-human races of Siltvelt. A bird demi-human. Highly loyal to Naofumi and welcomes him respectfully. Wants Naofumi to stay in his country and uses his political skills to try and keep him there.

The representative of the Laio race, a race of demi-humans in Siltvelt. Politically opposed to Werner, he decides to make contact with Naofumi independently. Polite, but the type of person tries to solve problems through force. Witnessed the last moments of Fohl and Atla’s father.