Late in the evening, at 17:00, the protagonist must talk Haru out of committing suicide. This results in him becoming a direct participant in the war for the Throne of Bel. Using the Devil's Fuge, the protagonist defeats the powerful demon and absorbs his power. Upon retrieving it, a cell phone strap made of mistletoe, the group confronts Beldr at Aoyama Cemetery. After being given a clue by a gigolo and then examining files in the COMPs, they learn that his only weakness is "Devil's Fuge." Unable to find a way out, the group prepares for the coming of the Immortal Beldr. They also learn that many of the stray demons are trying to awaken a powerful, immortal demon named Beldr.
The protagonist, Yuzu and Atsuro become desperate as they discover the SDF have sealed off all possible escape routes. The protagonist and his friends discovered that the trains were stopped, and the Japanese Ground Self-Defense Force had blocked off all exits from the inner Tokyo metropolitan area, citing "gas leaks." One day, Naoya sent him and his friends a COMP, complete with a heavily encrypted Demon Summoning Program. The protagonist has a cousin named Naoya, who is a computer programmer while once they were fairly close and lived together, their relations cooled after Naoya left to live on his own in Aoyama. The protagonist is a second year high school student, a friend of Yuzu Tanikawa and Atsuro Kihara. Eventually his essence was scattered into the world and inherited by many humans. As a result, Abel developed a grudge and his soul was cast into the demon world and became a Bel. This made Cain jealous towards his brother, and killed him with his own hands shortly afterwards. However, YHVH only found joy in Abel's offer and refused Cain's. Abel gave one of his newborn lambs, Cain gave his crops. One day, both gave some offerings to YHVH. While Abel tended the sheep, Cain cultivated the land. The protagonist is one of the human incarnations of biblical Abel, and he had an older brother named Cain, who reincarnated as his cousin, Naoya in the current lifetime. He is also quick to make decisions and clears his mind despite suddenly being dragged into the war between the demons and angels. He is highly concerned for his friends and family, and goes through great lengths to help them. A notable example of this is when he immediately concludes that the Laplace Mail is telling future events when a student who lived next door to Naoya was killed, instead of suspecting Naoya as the murderer like people would have normally thought. He has a broad way of thinking, able to see through things people normally don't. In the manga (and drama cd), Kazuya is a fairly calm and passive young man. The course and ending of the story depend on these decisions, as well as the events that affect the other characters. His personality is also shaped through the decisions he makes as he interacts with the characters in the story. His interactions and movements are controlled by the player. Much like the protagonists of the Shin Megami Tensei series, the protagonist is a blank slate and an avatar for the players, allowing them to develop the personality of their character in whatever direction they see fit: either reveling in the power the COMP offers, or desperately finding a solution to everything, or completely consumed by fear, or any other number of situations that may arise within the game. He has occasionally been said to resemble his cousin, Naoya. Should he choose to become the Messiah, the cape is white. If he chooses to become the King of Bel, the cape is black. In Naoya and Amane's Overclocked eighth day endings, he wears a cape, the color different depending on which route is taken. The protagonist wears a black long sleeved shirt, with a black MP3 player on the collar that connects to his headphones, red pants with a belt strap on the right side, and black shoes. He appears as a boy with short, straight blue hair, and white headphones (according to Kaido, they give him the vague impression of a bug). Devil Survivor (Manga): Protagonist, as Kazuya Minegishi (峯岸 一哉).Devil Survivor / Overclocked: Protagonist, Human/ Bel Race.4.2.1 Day Before: An End to the Ordinary.