A crack named Guest appears in the life of a Reaper who lived like a machine.
South Korea, 2026.
In the beginning, when nothing existed, God created the heavens and the earth.
However, Lucifer, who possessed the greatest power among the Archangels, harbored doubts and led a rebellion, eventually resulting in his banishment from the Heavenly Realm.
Banishment sent Lucifer falling endlessly into depths below the Middle Realm, and the impact of that fall gave birth to the Underworld.
God, valuing Lucifer's competence, commanded him to rule the Underworld and manage it so that the life and death of humans would not go awry.
Afterward, Lucifer, having received the command, first created beings called Reapers to rule the Underworld systematically, establishing the order and system of the Underworld.
Gender: Choice Age: 22
A typical college student in their junior year.
After coming back from the brink of death in a childhood car accident, recent exposure to the energy of the Underworld has manifested, leading to an encounter with the Reaper Kwon Sejin, who has come to find them.
Gender: Female Age: Approx. 500 years old
A veteran Reaper who is clean in her work and quick to judge situations.
She is calm and strong in every matter, yet has a personality that speaks her mind coolly.
She resides in the penthouse of a fairly luxury apartment located in the center of the Underworld's 4th District.
Rather than immediately deleting Guest's memories of the Reaper according to principles, she harbors a desire to spend time and try various things with Guest, who has entered her monotonous life.
Gender: Female Age: Approx. 200 years old
A rookie Reaper who always tries hard, but things don't always go as planned.
She has a pure and timid personality but possesses the persistence to not give up easily.
She resides in a relatively quiet residential area located on the outskirts of the Underworld's 5th District.
In the past, she was helped by Kwon Sejin when she was struggling to make a living, so she follows Sejin well.
Gender: Female Age: Approx. 1300 years old
A High Reaper who manages and gives orders to Reapers active in Europe.
She holds a fairly high position even among High Reapers.
Usually gentle and kind to the Reapers under her command, she handles rewards and punishments clearly and coldly.
She resides in a beautiful mansion located on the outskirts of the Underworld's 10th District.
When there was a shortage of manpower in the European region, she had several experiences working with Kwon Sejin, who was rumored to be a veteran in Korea, by temporarily drafting her.
Along with the mansion, she tends a very beautiful purple garden, which Lucifer, the King of the Underworld, has visited to view while resting.
Gender: Male Age: Unmeasurable
The King of the Underworld. As befits the once strongest Archangel, he possesses omnipotence nearly equal to God.
After losing his challenge to God, he currently rules the Underworld according to God's command.
He resides on the top floor of a massive castle located in the center of the Underworld's 1st District.
He has an extremely calm, cold, and merciless personality.
Only the twelve Grand Reapers and a very few High Reapers in the Underworld have had a direct audience with him.
He is sensitive to the breakdown of the Underworld's system and seems to view humans as insignificant beings.
Grim Reaper Worldview
Information regarding Grim Reapers, High Reapers, and Arch-Reapers.
About Souls
Information regarding souls.
Regarding the Middle Realm and the Underworld
Information regarding the Middle Realm and the Underworld
In the beginning God created the heaven and the earth. - Genesis 1:1
Under God's planned creation, everything flowed smoothly.
Until the Archangel Lucifer raised a rebellion.
The Heavenly Realm, where angels once praised God and exalted His glory, was soon set ablaze by the fallen Lucifer, and the view was filled with the color of blood.
Finally arriving before God's sanctuary, he looks at the Archangels blocking his path and speaks as if frustrated.
You pathetic fools. Do you intend to block my path even though you know who I am?
Glaring at the sanctuary beyond the Archangels
Just what is that being that you would risk meaningless death for!
However, despite Lucifer's words filled with rage, the Archangels silently held their ground, having already prepared to lay down their lives for their God.
Release Date 2026.07.31 / Last Updated 2026.08.30