Timeline

This is a general timeline for the events and content of the Deep-Sea Prisoner Universe. This list is incomplete.

To increase convenience, the timeline has been divided into four different "eras." These unofficial names of the eras correspond to the themes of the events within them.


 * Eras:
 * Pre-Gray era: Everything before The Gray Garden.
 * Gray-Blue era: The events of The Gray Garden up until Wadanohara and the Great Blue Sea. This does not include the events that happen during Wadanohara and the Great Blue Sea.
 * Blue-Black era: The events of Wadanohara and the Great Blue Sea up until Obsolete Dream. This does not include the events that happen during Obsolete Dream.
 * Black-Infinity era: Everything during and after Obsolete Dream.

Everything within an era section is not necessarily in chronological order.

Pre-Gray Era
The Pre-Gray Era is from the start of time up until The Gray Garden. It contains at least thousands of years, since Kcalb mentioned being locked up for eons.

The Sun's Curse
Siralos creates Igls Unth and Ivlis. Ivlis turns into a devil.

The Great War
The Great War was a war fought between Etihw and their angels and Kcalb and his demons. Kcalb was locked up by Etihw before the war. He has mentioned that he was locked up for eons.
 * Kcalb and Etihw said they do not remember how many of each other's subjects they had killed. In the same conversation, Etihw mentioned that Kcalb has more blood on his hands.
 * Ivlis has said that the Gray World was "built on a thousand sacrifices" at the end of The Gray Garden, which is in reference to the amount of angels and demons that were killed.
 * The angels and demons are buried together in The Gray Garden. This seems to indicate that they either got (re)buried in the graveyard after the war, or that there was an event that killed them all at the same time, ending the war.

Etihw repopulated the world through creation after the war ended: Yosafire’s generation is part of this repopulation. The reincarnations might not have been created at the same time seeing how there are age differences among the reincarnations, as is shown with the Preserves sisters.

Three Divine Beasts
The creation of the Three Divine Beasts is an event that took place during either the Pre-Gray era or the Gray-Blue era. Artamos has mentioned being around for "thousands of years." This means that the creation of the Three Divine Beasts took place around 2.000-10.000 years before the start of Wadanohara and the Great Blue Sea.
 * Satanick creates Aounabara, Artamos, and Kigisu.
 * Chlomaki mentions being born before the Blue Sea existed. This would also place her creation in the Pre-Gray era.

Seaside Dispatches 2
Seaside Dispatches 2 takes place before the devil mini-comics, thus taking place in the Pre-Gray era or early in the Gray-Blue Era.

Gray-Blue Era
The Gray-Blue era starts with The Gray Garden and ends where Wadanohara and the Great Blue Sea starts. The duration of this era is unknown. The main indicator of this era is the Devil mini-comic that shows Artamos in his bunny form, thus taking place after The Gray Garden but before Wadanohara and the Great Blue Sea.

The Gray Garden
The events of The Gray Garden take place. This is the start of the GB era.

ATTACK! Devil-ish Style
Satanick, Ivlis, and Siralos pay a visit to the Gray Garden. This takes place before Licorice or Silhouette were born.

Seaside Dispatches 1
Since Satanick and Ivlis know each other in Seaside Dispatches 1, this manga takes places after the ''ATTACK! Devil-ish Style'' comics, but before most of the other mini-comics. Licorice is conceived and born in this manga.

Satanick-Based Mini-Comics
Some mini-comics are confirmed to take place within the Gray-Blue era. They take place after The Gray Garden and before Wadanohara and the Great Blue Sea. Some can be put in chronological order. These include:
 * Distorted Love
 * Ivlis and Satanick know each other. They only meet after The Gray Garden.
 * Distorted Love 2
 * Sequel to Distorted Love.
 * Rainbow
 * Sequel to Distorted Love 2. Artamos still has his bunny form, confirming it takes place before Wadanohara and the Great Blue Sea.

Blue Sea Events
These events took place either during the Gray-Blue era, or the Pre-Gray era.
 * Meikai sacrifices himself for the Sea Kingdom, ending the war between Mikotsuhime and Uomihime.
 * Wadanohara is born.
 * Tarako is the only one younger than 100 years during Wadanohara and the Great Blue Sea, putting his birth in the last hundred years of the Gray-Blue era.

Blue-Black Era
The Blue-Black era starts with Wadanohara and the Great Blue Sea and ends where Obsolete Dream starts. It has been both formally been confirmed that Obsolete Dream takes place after Wadanohara and the Great Blue Sea, as been implied in-universe in chapter 7 of Obsolete Dream.

Wadanohara and the Great Blue Sea
The events of Wadanohara and the Great Blue Sea take place. This is the start of the Blue-Black era.

Black-Infinity Era
The Black-Infinity era starts with Obsolete Dream and has an undefined end.

Obsolete Dream
The events of Obsolete Dream take place. This is the start of the Black-Infinity era.

Ice Scream
The events of Ice Scream take place.

Poor Shrimp-based Mini-Comics
The Poor Shrimp-based Mini-Comics take place after WatGBS when Roc has kidnapped Lobco.

Later Events in the Blue Sea
Samekichi returns to the Blue Sea (as seen in the Wadanohara epilogue). Minami is born and sometime later adopts his familiars.

Other
Unknown:
 * Mogeko Castle
 * Poison Bugs