Kazuya

Kazuya is one of the seven heroes. He comes from the game Shrift, alongside Lampas, Mukuro and Daji. Like most of the other characters in the Collaboration Scenario, he starts off without any levels in jobs or races until he reaches a proper job change book.

Biography
Kazuya first appears in chapter 2, and also show up in chapters 6

He wakes up from a bed surprised to see himself in an apparently medieval house. He feels worried, as he feels he is now unable to use magic. Still, he manages to recover his gun, and checks his environment. When he checks himself in the mirror, he slightly panics as he notices a crest on his hand. He decides to focus on getting a grasp on the situation.

When he enters the hallway by leaving his room, Myusca's voice echoes in his mind and inform him (and several other people) that they will be turned into her food, unless they manage to escape. As he starts moving, he gets attacked by a Lampas. He is surprised to see one of them here, and wonders if its appearance comes from the work of Hecate.

When they start chasing him, Kazuya starts to run away, and after crossing several rooms, notices a monk boy running away extremely fast. He decides to try to find him to protect him. As he continue progressing, he notices a Lampas light, silently informing him that a human met his demise here. He notices he is trapped into a room loop, and manages to extricate himself of this trap by leaving by the way he entered.

He's then ambushed by another Lampas who blocks his way. He attempts to push her back, and is surprised when he casts a fire spell at her, burning her. He stops the flames with water from a pot. The Lampas let him pass, but guilts trip him for having burned her. He realizes that she will pester him to follow him even if he ignored her.

Kazuya then interrogates her to know why she's here, and is surprised to learn that just like him, several Lampas were sucked by a black hole vortex. He has difficulty accepting that this is a parallel world at first. He receives additional information, namely that magic is easy to use in this world which is why he's able to use it once again. He then refuses Lampas' lewd offer.

As he keep trying to catch up to Hakunen, Kazuya meets his first Spirit Fox. He presents himself as a Demon Hunter when the latter tries to seduce him and tell her to run. The result ends up being too effective, as she runs away in a panic while screaming. Unfortunately, Kazuya reaches a pub where tens of them are drinking, and is aghast when they take him for an exterminator. Right afterward, a shocked Hakunen is surprised by the large number of supposedly dead foxes around, and flee Kazuya in fear. A clearly dumbfounded Kazuya is determined to chase him to at least clear this misunderstanding. Eventually, he manages to free him out when a large group of Spirit Foxes gather to block the monk boy's path, and finally manage to get him to listen to what he has to say.

As the duo discuss, they realize they both got sucked in this world by a vortex and are in the same delicate situation. Hakunen then joins Kazuya, and tells him that he's looking for his master. When Hakunen blushes, Kazuya thinks there is a forbidden love between both of them.

When Hakunen tells him that he himself is bad at fighting, Kazuya tells him that he will defend him, before being flabbergasted when Hakunen proceeds to crush a boulder in a single punch. After crossing several mazes, the party ends up meeting a young man who tells thel they're in the village of Finoa before unfortunately falling prey to Myusca. Realizing they're outclassed, Kazuya leads the party away before running into a large group that took refuge. However, Myusca follows them, suck dry a few persons, and leave to enjoy the party marinating in their own fear.

As they get close to the end, the party encounters the White Rabbit. While the other party members are wary and wonders if she's an ally of Myusca, Kazuya recognizes that she isn't an enemy. He then receives an explanation about the Seven Heroes, the crest being the Proof of Collaboration and the "Queen of Dreams". Kazuya accepts it and correctly deduce what's happening. Afterward, when Hakunen reveals he is married, Kazuya is shocked and become extremely formal for a short time.

However, the party soon meets Myusca again and is forced to fight her. They barely manage to scratch her when the Proof of Collaboration on the back of her hand reacts, dumbfounding them at the idea that she could be one of the Seven Heroes before hey decide to run away while she's surprised. However, once outside, they end up running into Nemea and Vinum.

Kazuya identifies the former as being just as dangerous as Myusca, while he considers that the latter is on a league of her own. Amused, the two succubi decide to leave and continue wrecking the village. While Hakunen is aghast, Kazuya decides that they have to move on.

When they enter the next house, Kazuya is surprised by the sight of several Mukuro dolls attacking the villagers. When they don't recognize him, he understands that they're just machines. He then explains to Hakunen that Muruko was a girl who died in loneliness and whose spirit possessed a doll to make contracts with her partners by squeezing them, although these ones seem different.

The party later runs into Nemea again as the latter is draining a young boy to death. Understanding that they're outclassed, the party is forced to escape.

Afterwards, the party encounters Vinum, who is too busy reading and doesn't want to be disturbed. The party is once again forced to sneak through a mess to not catch the attention of the succubus.

After sneaking through, the party encounters several nun-functionnal Muruko dolls, and it is revealed that Kagetsumugi is responsible for mass producing them for the Alliance. The party is cautious when they encounter her, and she unleashes a Mukuro who still has some memories of Kazuya and shows signs of life. Kazuya calls her by her old name, Akane, which triggers her old memories and forces the party into a fight.

Kazuya then gladly welcomes the conscious Mukuro back. Once the heroes have beaten the doll, they ask Kagetsumugi if she will be their next opponent. The small puppeteer answers them that she will take her leave as she delivered the dolls to the Alliance just like she was asked, and let Kazuya recruit Mukuro for the sake of the doll's happiness. As she leaves, Kazuya asks her if she's a puppeteer or a puppet, upon which she answers that she is "not a puppet" while displaying her monstrous nature before disappearing.

Unfortunately, not long after, the party falls on Vinum and they realize they must once again run with all their might. As soon as they escape, they fall on Nemea and are forced to fight her. Just afterwards, Vinum and Myusca show up, cutting any chance the party has to retreat. Fortunately, they are saved by the intervention of Magatsu, Lauratt and Rigeo.

Before the succubi leave, Kazuya asks why Myusca has the Proof of Collaboration on her hand. She answers that she got it when she arrived, before being corrected by Vinum who reminds her that she got it from her first victim who was supposed to be the hero of their world, which surprise the succubi as he was incredibly weak.

Afterwards, both groups introduce themselves to each other. Kazuya is surprised to see that Hakunen's master is a beautiful oni, which Magatsu exploits to further tease her apprentice.