Series Continuity

The Made in Abyss story has seen multiple adaptations. To help guide fans of the series, we have compiled a list of notable changes made between different media.

Volume 1
Chapter 1: Orth: The City of the Great Pit
 * The beginning sequence with Riko, Nat, Shiggy and Kiyui originally takes place in the classroom of the orphanage while in the anime it takes place inside Riko's room chronologically after the introduction of Reg's character; Nat and Shiggy also do not make fun of Riko.
 * Riko is shown to prepare for her trip the night before.
 * The sequence where Riko and Kiyui hang out in Laffi's shop takes place chronologically after Reg's character introduction in the anime.

Chapter 2: The Abode of Trees and Fossils
 * After being saved by a strange light, Riko finds that Nat is safe and makes up an excuse to go look for the source of the light.

 Chapter 3: Riko's Room: Former Torture Chamber 
 * Reg notices a symbol on his helmet, unlike in the anime where he doesn't try it on.
 * Reg hides alone as Jiruo comes back for Riko, who had escaped.

 Chapter 4: Belchero Orphanage 
 * Reg's name is revealed during his introduction to Jiruo.

 Chapter 6: Premonition 
 * Riko reveals Lyza's Letter to everyone and her plans of leaving into the Abyss in Reg's recollection of the previous night.

 Chapter 7: Eve of Departure 
 * Reg and Nat visit the relic appraisal shop after the trip to the Abyss where Reg finds out what a Princess Bosom is.

 Chapter 8: Here We Go! 
 * Reg looks for Nat in his room before meeting up with Riko and Shiggy.

Volume 2
 Chapter 16: A Vile Mentoring Method 
 * Ozen recalls her relationship with Lyza, leading up to Lyza's face-reveal.

Volume 3
 Chapter 17: Survival Training 
 * Ozen also mentions that there are creatures living along the path to the bottom of the netherworld called "Gatekeepers."

 Chapter 18: The Depths' Third Layer: The Great Fault 
 * Riko uses a Sun Sphere to stagger the Crimson Splitjaw and Reg does not use his Incinerator, instead he drives the Crimson Splitjaw away with a headbutt and a strike with his two hands.

Volume 4
 Chapter 26: A Fresh Start 
 * Nanachi measuring the Backpack on Reg.

 Chapter 27: The Forbidden Field of Flowers 
 * Reg shows his frustration about the burning of the field.

 Chapter 28: The Entrance to the Sixth Layer 
 * Riko is astonished by the width of the 5th Layer, estimating Orth might fit about 10 times.
 * Reg wonders if he came up through the Altar of the Absolute Boundary as well, Nanachi replies that he can hold his breath so he probably just swam up.

 Chapter 30: Unseen Peril 
 * Nanachi asks about the other White Whistles to which Bondrewd replies that they both went down to the 6th Layer, Srajo left without a notice and Wakuna left using his own personal relic.

 Chapter 31: Despair and Hope 
 * Prushka gets surrounded by Umbra Hands after letting Riko's team use the boat to escape.

 Chapter 32: The End of a Fierce Fight 
 * Nanachi takes Riko's glasses to concentrate after being struck by the curse of the 5th Layer.
 * Hablog gives an account of Bondrewd's deeds to Nat and Shiggy as Bondrewd is shown to have survived the Stingerhead's ambush.

Volume 5
 Chapter 33: The True Nature of the Mask 
 * Riko pictures the relics from the compilation of recorded relics trying to figure out what relic was it that brought Bondrewd back alive. Nanachi prevents Reg from looking at Bondrewd's Corpse
 * Reg enters Ido Front from inside by diving in the water, he then finds the Failed Umbra Hands roaming around doing menial tasks, wearing Prushka's paper mâché whistles. Reg then shows compassion for what would happen to Prushka.

 Chapter 34: Counterattack 
 * Bondrewd refers to the 6th layer and beyond as the "pivotal area of the netherworld, from which one can never return."

 Chapter 35: Clouded Memory 
 * Nanachi endures the curse of the 5th Layer and needs to concentrate before regaining their senses.
 * Reg pictures both Lyza and a Human-looking silhouette as he tries to express what happened to Nanachi.

 Episode 37: Flower of Dawn 
 * Gueira tells Prushka he's heard that creatures from the Absolute Boundary possess the ability that let Prushka reveal things where she couldn't see.
 * Prushka remembering the time she learned about cartridges and tells Bondrewd she'll help him, as Bondrewd has lost some valuable collaborators.
 * Though not adapted into the movie version, the scene where Prushka and Gueira gift the Failed Umbra Hands their paper mâché whistles appears as part of the OVA, Together with Papa.
 * Prushka remembering when Bondrewd died and promising to love him forever so he doesn't go away.

 Episode 38: The Challengers 
 * Nanachi notices Bondrewd's already gone by the time they say their last words to him.

Season 1
Episode 1: The City of the Great Pit
 * After luring the Crimson Splitjaw and falling down a hole, instead of staying in place Riko gets chased until she is ultimately saved from the Crimson Splitjaw by a mysterious light.
 * Nat's state is not revealed until after Riko finds Reg.
 * After hearing Jiruo coming back for Riko, instead of hiding and letting Riko take further punishment, Reg makes use of his extendable arms and helps Riko escape.
 * Riko names Reg after they escape from Jiruo, instead of being part of Reg's first meeting with Jiruo.

Episode 2: Resurrection Festival
 * The explanation for the curse is narrated by Shiggy instead of being a recollection of Jiruo's lecture by Riko.

Episode 3: Departure
 * Riko reveals to everyone the night before Reg's first trip as a Red Whistle Lyza's Letter and her plans of leaving into the Abyss, instead of happening as a recollection of Reg.

Episode 4: Edge of the Abyss
 * Reg faints after Riko's description of the Incinerator.

Episode 5: Incinerator
 * Example

Episode 6: Seeker Camp
 * Reg asks directly whether Marulk is a girl.
 * The sequence concerning Riko's discovery of the headless monster and telling Marulk and Reg happens chronologically, not in flashback format.

Episode 7: The Unmovable Sovereign
 * Habo's account about Ozen is shown before the reveal of Riko's birth.
 * Ozen only reminisces of her first encounter with Lyza and Lyza becoming a Black Whistle as she leaves her private room.

Episode 8: Survival Training
 * As Zapo mentions how Reg and Riko best learn to depend on one another, Ozen reminisces of her adventures with Lyza and the sequence of events relating to Riko's birth.
 * As Riko and Reg depart into the 3rd Layer, Ozen reminisces of Lyza leaving to the bottom of the Abyss and her promise to reveal the truth to Riko, leading up to Lyza's face-reveal.

Episode 9: The Great Fault
 * Riko and Reg encounter a Madokajack first inside the imprisoned pirate ship before the Crimson Splitjaw. Reg fires the incinerator at the Madokajack, leaving himself unconscious after escaping from the Crimson Splitjaw.
 * Reg wakes up and strikes the Crimson Splitjaw with a headbutt, Riko hands the Blaze Reap to Reg. Riko doesn't use a Sun Sphere and Reg does not strike the Crimson Splitjaw with his fists.

Episode 10: Poison and the Curse
 * Example

Episode 11: Nanachi
 * Example

Episode 12: The True Nature of the Curse
 * Example

Episode 13: The Challengers
 * The scene where Bondrewd checks that Mitty's Lamp has turned off occurs at the end of the episode, instead of right after Mitty's soul has been released.
 * Riko, Reg and Nanachi send a Mail Balloon, passing through every layer they've been so far and the people they've met until it reaches the 1st Layer where Nat and Shiggy pick it up. Nat and Shiggy return to Orth, where an abundance of Eternal Fortune petals lie on the streets.

Season 2
Episode 1
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Episode 2
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Episode 3
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Episode 4
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Episode 5
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Episode 6
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Episode 7
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Episode 8
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Episode 9
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Episode 10
 * Example

Episode 11
 * Example

Episode 12
 * Example

Movie 1

 * Example

Movie 2

 * Riko and Reg encounter the Crimson Splitjaw inside the imprisoned pirate ship and are chased into a cave, Reg hesitates on whether to fire the incinerator but Riko hands Reg the Blaze Reap. Riko doesn't use a Sun Sphere and Reg does not strike the Crimson Splitjaw with his head and fists.

Movie 3

 * As the team travels down Nanachi climbs down a pillar into a pad while Reg brings Riko down with his arms. Reg reassures Nanachi that they can trust on their information regarding the layout of the abyss, Nanachi says they've got to respect their leader's opinion.
 * Reg can be seen zooming in to the collapsed delvers.
 * Nanachi throws the Amaranthine-Deceptor that bit them with vigor.
 * A water support can be seen collapsing, opening a path.
 * Prushka is shown watching the group as they arrive.
 * Reg sees a figure of a Human-looking silhouette as he looks at Bondrewd.
 * Nanachi says they've come to an understanding of sorts with Bondrewd, respecting their leaders decision.