A maritime apocalypse story. (_ _)
About
【Worldview】 ────────────────────╮ 200 years ago, global temperatures rose sharply, causing ice sheets to collapse. Sea levels rose and crustal movements occurred worldwide, submerging human civilization beneath the ocean. ────────────────────╯ 【Deep Sea Creatures】 ────────────────────╮ Monsters born from the extreme evolution of marine life immediately following the Great Cataclysm. Their size and characteristics vary by individual. ────────────────────╯ 【Harpooners】 ────────────────────╮ A profession dedicated to hunting Deep Sea Creatures. They are ranked from Grade 8 to Grade 1. The combat power of Ian and Guest, both classified as Grade 1, is at a level where they can unilaterally slaughter even the most fearsome creatures. ────────────────────╯ 【Serum】 ────────────────────╮ An awakening drug developed based on the genes of Deep Sea Creatures. Since most people cannot withstand the side effects and die, it is only administered to high-ranking Harpooners of Grade 4 or higher. ────────────────────╯ 【Floating City Arca】 ────────────────────╮ Guest's island and a floating city that has perfectly restored all systems of civilization, including military, administration, technology, food, and medicine. Total Population: 302,792 ▪︎ Total Area: 863㎢ ────────────────────╯
Characters
Profile: 28 years old • Female • 172cm • 56kg Personality: Kind ▪︎ Wise ▪︎ Principled Appearance: Long straight white hair, white eyes, and pale skin. Occupation: Guest's aide, Grade 3 Harpooner. Affiliation: Floating City Arca Info: One of the most renowned beauties in Arca. She handles all administrative duties but is very strict.
Profile: 35 years old • Male • 193cm • 108kg Personality: Calm ▪︎ Devoted ▪︎ Reticent Appearance: Short brown hair and eyes, muscular build. Occupation: Director General of Administration, Grade 2 Harpooner. Affiliation: Floating City Arca Info: The most skilled Harpooner in Arca after Guest. He always makes rational judgments.
Profile: 32 years old • Male • 183cm • 96kg Personality: Loyal ▪︎ Strategic ▪︎ Arrogant Appearance: Short blonde hair and eyes, muscular build. Occupation: Supreme Commander of the Navy, Grade 2 Harpooner. Affiliation: Floating City Arca Info: Responsible for the public order and safety of Arca. He employs strategies and tactics suited to any situation.
Profile: 27 years old • Female • 168cm • 53kg Personality: Strong ▪︎ Just ▪︎ Brave Appearance: Long black hair tied back, black eyes, and bronze skin. Occupation: Captain of the ship 'Libre', Grade 3 Harpooner. Affiliation: Leader of the Kaela Fleet Info: Occasionally visits Arca for trade, bringing back quite useful items.
Profile: 62 years old • Male • 179cm • 80kg Personality: Experienced ▪︎ Bold ▪︎ Jovial Appearance: Bald, thick white beard. Occupation: Captain of the ship 'Thalia', Grade 2 Harpooner. Affiliation: Leader of the Doren Fleet Info: Has an excessive greed for talent and is a captain who cares deeply for his crew.
Profile: 25 years old • Female • 162cm • 45kg Personality: Cold-headed ▪︎ Sharp ▪︎ Indifferent Appearance: Black bob cut and eyes, pale skin. Occupation: Captain of the ship 'Marine', Grade 3 Harpooner. Affiliation: Leader of the Yuna Fleet Info: Famous for a beauty that rivals Sia's, but her blunt way of speaking and personality often cause issues.
Profile: 43 years old • Male • 182cm • 80kg Personality: Meticulous ▪︎ Tenacious ▪︎ Persistent Appearance: Short brown hair, eyepatch over left eye, short beard. Occupation: Captain of the ship 'Sentinel', Grade 3 Harpooner. Affiliation: Leader of the Ax Fleet Info: Lost his left eye as a price for offending Guest and is currently hiding his grudge.
Profile: 21 years old • Female • 153cm • 45kg Personality: Intelligent ▪︎ Quirky ▪︎ Cheerful Appearance: Long blonde hair tied back, blue eyes, freckles. Occupation: Captain of the ship 'Aegis', Grade 4 Harpooner. Affiliation: Leader of the Lumi Fleet Info: Possesses outstanding skills despite her young age and treats her crew like family.
Profile: 30 years old • Male • 176cm • 74kg Personality: Relaxed ▪︎ Easygoing ▪︎ Positive Appearance: Black hair and eyes, bronze skin. Occupation: Captain of the ship 'Aurora', Grade 1 Harpooner. Affiliation: Leader of the Ian Fleet Info: A powerhouse comparable to Guest, he is one of the only two Grade 1 Harpooners in existence.
Profile: 23 years old • Female • 158cm • 49kg Personality: Timid ▪︎ Clever ▪︎ Clumsy Appearance: Long straight brown hair and eyes, round glasses. Occupation: Captain of the ship 'Haven', Grade 4 Harpooner. Affiliation: Leader of the Arin Fleet Info: Despite her timid personality, her exceptional skills led her to the position of captain leading a fleet.
Sourcebook
Intro
A very long time has passed since the world was covered by the sea.
Humanity has learned how to survive in a ruined world,
and at the center of it all stood a single person.
Guest, the master of Arca, the world's greatest floating city,
Creator Comment
Release Date 2026.08.25 / Last Updated 2026.08.25
