Unnatural Death
Last updated 2026-07-05
Unnatural Death is an Adventure Mission on Amphoreus. It is part of the Amphoreus Annals chapter.
Steps
- Find in the Grove clues that Periphas value
- Observe the black-robed swordmaster's final act
- Let Periphas know of the investigation's outcome
Dialogue
Find in the Grove clues that Periphas value
Mission Description"People cannot manage to die together. Even if they die at the same time, they are simply facing their own respective deaths."
— Witness Periphas' friends' final moments as the black tide killed them.
- (Talk to Periphas)
- Periphas: You... I recognize you. You're that outlander who's always seen with the Chrysos Heir! [sic]
It's me.
- Periphas: Great, now that you're here, maybe there's hope for me.
What's up? Do you need something?
Sorry, you've got the wrong person.
- Periphas: Everyone says that you have a playful sense of humor, and it seems they're right.
- Periphas: Here's the thing... I'm a member of the Okheman Deduction Society. I rushed here to investigate after hearing about the Grove's destruction by the black tide.
- Periphas: However, I didn't expect the black tide's remnants to still be lingering nearby... I'm just an amateur adventurer and lack the kind of power you and the Chrysos Heir [sic] have to thoroughly investigate this.
- Periphas: So...
You want my help to investigate the clues, don't you?
- Periphas: Ah, exactly! Does that mean you'll help?
Since when did Okhema have a Deduction Society?
- Periphas: Well, it's not surprising you haven't heard of it. There are only four of us, including me.
- Periphas: So... I'm hoping you can help...
- Periphas: I wish to inquire about some friends of mine who were lost in the black tide. They are Clio from the Lotophagists, Nicomachus from the Nodists, and Andreas from the Venerationists.
How can I help?
I don't know any of these people.- Periphas: I heard the people of Okhema say that you can use Oronyx's divine power...
- Periphas: I had an idea when I saw you — Maybe you can somehow sense what happened to them if you go take a walk in the Grove with these things on you.
All right, I'll give it a shot.
- Periphas: Thank you! I'll wait here... It's all right. Even if you don't find any clues, this is an unexpected favor, and I won't blame you for it!
I can't promise anything.
- Periphas: That's all right. Even if you don't find any clues, this is an unexpected favor, and I won't blame you for it!
- (Obtain Clio's Experimental CropClio's Experimental Crop Clio's Experimental Crop ×1, Nicomachus' NotebookNicomachus' Notebook Nicomachus' Notebook ×1 and Andreas' Ceremonial Medicine EnhancerAndreas' Ceremonial Medicine Enhancer Andreas' Ceremonial Medicine Enhancer ×1
Activate Fragments of Recollection- (Interact with Nicomachus)
- This terrain's a natural choke point. Set up some laser cannons from the world beyond the sky on both sides, and we'd have an impenetrable defensive position.
- Unfortunately, there are no useful defensive facilities here, and the black tide's method of advance is far beyond what ordinary military forces can handle.
- The only thing that the martyred can do is to use their lives in desperate combat to delay for a very limited time.
- (Trailblazer): I knew it — he rode in with the black tide.
- (Trailblazer): And then, along this path...
- Tracking the black-clad swordmaster led you to the Grove's central area.
- (Obtain Nicomachus' Work PermitNicomachus' Work Permit Nicomachus' Work Permit ×1)
- (Approach marked location)
- (Trailblazer): Another intersection...
- (Trailblazer): Do black tides never lose their way?
Activate Fragments of Recollection- (Interact with Andreas)
- Before the flood of despair submerges people up to their necks, the roof is their only hope.
- People pray to their gods here, believing in the 'Leap of Faith' as if it were a lifeline, hoping that it truly exists.
- The cruel part is... even the most unwavering faith cannot overcome the limits of "this existence" itself.
- (Trailblazer): Their path of destruction led...
- Keep tracking the black-clad swordmaster's trail.
- (Obtain Andreas' Work PermitAndreas' Work Permit Andreas' Work Permit ×1)
- (Approach marked location)
- (Trailblazer): Not even this area... was safe.
- (Trailblazer): The invader seems unusually familiar with the Grove.
Activate Fragments of Recollection- (Interact with Clio)
- It is said that hide-and-seek is the oldest game for all intelligent life. The hunter needs to hide to approach the prey, and the prey also needs to hide to avoid the enemy.
- — But thinking about such things in an area destroyed by the black tide seems too cold-blooded. What kind of unease and despair did the deceased go through... it's hard to imagine.
- (Trailblazer): So... this must be the "end."
- Tracking the black-clad swordmaster led you to where the final battle occurred.
- (Obtain Clio's Work PermitClio's Work Permit Clio's Work Permit ×1)
Observe the black-robed swordmaster's final act
Step DescriptionThe black tide runs over mortals ruthlessly without a shred of mercy, but that doesn't seem to be enough to explain why it's so... "efficient."
- (Approach marked location)
- (Trailblazer): From the looks of it...
- (Trailblazer): He somehow... took the fastest way through?
Activate Fragments of Recollection- (Idle text)
- Panicked Scholar: ...The defenses were breached? What happened!?
- Despairing Scholar: That black-robed swordmaster?
- (Interact with Panicked Scholar, optional)
- Panicked Scholar: ...The defenses were breached? What happened?! If it were just the black tide, we could have lasted longer...
- (Interact with Despairing Scholar, optional)
- Despairing Scholar: That black-robed swordmaster followed closely, overwhelming all those who still dared to resist.
- Despairing Scholar: He's not just a mindless beast. He was on a mission to obliterate the Grove!
- (Interact with Flame Reaver)
- It looks like this is exactly what happened: The black tide swept through, crushing most people without a shred of mercy.
- But... the scenes I just witnessed seem to highlight some odd details—
- There was a Chrysos Heir stationed at the Grove, they shouldn't have fallen so easily to the black tide. And that black-clad swordmaster's actions... they seem rather suspicious upon reflection.
- (Trailblazer): (All information gathered. Time to head back and discuss with Periphas.)
Let Periphas know of the investigation's outcome
Step DescriptionLet Periphas know of the suspicious conclusions from the investigation.
- (Idle text)
- Hekate: Argh...
- (Listen to right side group, optional)
- Concerned Warrior: Remind me... what's the deal with that thing again?
- Capable Female Member: Never heard of that entity before! Strange for someone so powerful to be off the radar...
- Rigorous Female Member: According to our investigation, the Grove's scholars could have managed an organized evacuation from the black tide, with many survivors, but... everything changed when that black-clad swordmaster appeared.
- Concerned Warrior: *Tsk*... he's more trouble than we thought. We should report these new discoveries at once.
- (Listen to left side group, optional)
- Exhausted Male Member: We've searched again... but still... no survivors...
- Serious Female Member: ...
- Serious Female Member: Stay focused. We still have cleanup duties to handle.
- (Talk to Hekate, optional)
- Hekate: Long time no see. Didn't expect to run into you here.
What a coincidence!
What are you doing here?
Who are you again?
- Hekate: I once hired you to leave the city to investigate, looking for clues about Aunt Demetria's daughter.
- Hekate: ...I was entrusted by that Lady "Goldweaver" to lead the team here to handle some matters.
- Hekate: But this matter is quite serious, so please don't spread this information casually.
- Hekate: Do you have something to do here? If you need help, I can offer some assistance.
Just running an errand for the people beside me.
No problem, it's already been solved.- Hekate: That's good... I know you're strong, but right now the black tide hasn't dissipated, and it's still extremely dangerous.
- Hekate: If there's nothing else, you'd better return to Okhema soon.
- Hekate: As for that person who refuses to leave, leave him to me.
- Hekate: Once this is handled, we'll bring him back with us.
- (Talk to Hekate again, optional)
- Hekate: If there's nothing else, you'd better return to Okhema soon.
- (Talk to Periphas)
- Periphas: How did it go? Did you... find anything?
- (Submit Nicomachus' Work PermitNicomachus' Work Permit Nicomachus' Work Permit ×1, Andreas' Work PermitAndreas' Work Permit Andreas' Work Permit ×1 and Clio's Work PermitClio's Work Permit Clio's Work Permit ×1)
- Periphas: This is... just as I feared...
...I'm sorry for your loss.
I hate to be the bearer of bad news.- Periphas: It's alright. I was prepared for this outcome. For most people, escaping the grasp of the black tide unscathed is nearly impossible.
- Periphas: To be sure, could you describe in detail the locations where these relics were found and the specific events you witnessed?
- You relayed the scenes from your memories to Periphas.
- Periphas: ...Alas. In their final stand, Nicomachus desperately clashed with the creature, Andreas called out for a Titan's miracle, and Miss Clio, despite their valiant efforts to shield her...
- Periphas: ...What? Hold on. From what you just told me, that enigmatic swordmaster who tried to steal the Coreflame seemed ruthless, marching straight toward the Throne where the Coreflame is enshrined — Did I get that right?
It seems so.
I'm not sure... but it seems highly likely.- Periphas: ...
- Periphas: He's been to the Grove before, hasn't he?
What do you mean?
I have that feeling too.
- Periphas: It seems I'm not alone in finding his actions dubious.
- Periphas: If he had never visited the Grove before, I find it hard to believe he wouldn't be baffled by its intricate layout.
- Periphas: Even when Nicomachus guided me on my first visit, I got lost looking for the restroom... And Andreas, who always complained about being directionally challenged, still got lost in the Grove despite working there for years.
- Periphas: From the clues you've gathered, comparing that mysterious person's actions to those of a robber... I find it hard to believe he hadn't scoped out the place beforehand.
- Periphas: But the question is... does the black tide possess such intelligence? How did he manage to slip past the Grove's defenses and head straight for the core?
Does he have the ability to conceal his presence?
- Periphas: That's horrifying... If that's the case, are Okhema's defenses just for show?
- Periphas: No, that suggests he isn't all that powerful. If he were, the other Coreflames would have been stolen long ago.
Perhaps he used navigation?
- Periphas: Uh... was that a joke? Sorry, I'm not really in the mood to laugh right now.
Could there be an insider involved?
- Periphas: ...
- Periphas: We're still short on info. There's something wrong here... but without conclusive evidence, it's hard to make a solid deduction.
- Periphas: Regardless, this individual must have scouted out the Grove beforehand. His methodical approach doesn't scream of a careless burglar, but rather hints at a calculated assassin who's thoroughly in the know.
So, what are you going to do?
- Periphas: I'll try to act with other smart souls and stay united... "The dead can only stop, but the living must move forward."
It's alright. I've got your back.
- Periphas: ...Thank you. When you're not here, I'll try to act with other smart souls... "The dead can only stop, but the living must move forward."
- Periphas: Clio, Nicomachus, Andreas... everyone at the Grove... may you rest in the embrace of Thanatos.
- Periphas: As for us, the outlanders — the unknown threat is getting closer. Let's stay vigilant at all times.
- (Mission Completed)
- (Unlock Achievement The Killer Is Not From This Game)
- (Obtain

Memory Crystal Shard ×2)
Other Languages
| Language | Official Name |
|---|---|
| English | Unnatural Death |
| Chinese (Simplified) | 非自然死亡 |
| Chinese (Traditional) | 非自然死亡 |
| Japanese | 不自然な死 |
| Korean | 비자연적 죽음 |
| Spanish | Una muerte no natural |
| French | Mort non naturelle |
| Russian | Неестественная смерть |
| Thai | ความตายผิดธรรมชาติ |
| Vietnamese | Cái Chết Bất Thường |
| German | Unnatürlicher Tod |
| Indonesian | Kematian yang Tidak Wajar |
| Portuguese | Morte Não Natural |
Change History
Released in Version 3.1