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The Mystery of Arpeggio Fault (A)

Last updated 2026-06-29

The Mystery of Arpeggio Fault (A) is a set from the Lost Items From the Old Capital's section of Ray's Research Log. It is obtained while carrying out the questline for The Mystery of Arpeggio Fault.

Set Description

A clue obtained while investigating the Arpeggio Fault. Perhaps it can help us unravel the mystery of the monster attacks.

Clues

IconNameObtainable In
Item Dampened Ether ExplosivesDampened Ether ExplosivesUnknown
Recently transported Ether explosives by a cargo robot for clearing paths in the Hollow. Upon discovery, the explosives had fallen from the robot's cargo hold and, having become damp, can no longer be detonated.
Item Photo of the Turbulent RegionPhoto of the Turbulent RegionUnknown
A photo of the "Turbulent Corridor" area in the Arpeggio Fault was obtained from an institute investigator. The investigator specifically noted that the Ether concentration in the Turbulent Corridor area is abnormal, with an excessive number of fault fragments that are severely damaged, indicating that they are not naturally formed products of Hollow changes.
Item White Star Institute DocumentsWhite Star Institute DocumentsFault Surface 3
A document bearing the emblem of the White Star Institute. The remaining text is roughly as follows:
"...It has been confirmed... the Fourth Laboratory is located... within the fault... Therefore, it is unanimously agreed that dispatching an advance team to recover the special Etheric Matter is urgent... As the vault is a key location for the institute, the key for entry must only be kept by the team leader and must not be lost..."
Item Worn TabletWorn TabletUnknown
A tablet terminal with a shattered screen. It is a standard smart device used by White Star Institute researchers and also has basic communication functions. Several messages can be found in the tablet's inbox, with the following content:
"Alowyn, it's been half a month. Have you found the key to our storage room? If you can't find it yourself, ask your colleagues."
"Alowyn, please find the key to the storage room as soon as possible. Mom needs it urgently."
"Alowyn, if you can't find the key, Dad has called a locksmith. Take leave and go home on that day. Mom misses you."
Item Laboratory MapLaboratory MapUnknown
A building blueprint found in the Arpeggio Fault. Although damaged, it shows the text "Fourth Laboratory Level B1." In the corner of the paper, there's a circled wall, with hasty small writing nearby saying, "Due to key operation failure, changed to demolition plan."

Other Languages

LanguageOfficial Name
EnglishThe Mystery of Arpeggio Fault (A)
Chinese
(Simplified)
断层之谜・上
Duàncéng zhī Mí - Shàng
Chinese
(Traditional)
斷層之謎・上
Duàncéng zhī Mí - Shàng
Japanese断層の謎・上
Korean단층단층 수수께끼・
Dancheung-ui Susukkekki - Sang
SpanishEnigma de la falla Arpegio (I)
FrenchLe mystère de la Faille de l'Arpège (A)
RussianТайна Арпеджио (A)
Tayna Arpedzhio (A)
Thaiปริศนาของ Arpeggio Fault (I)
VietnameseBí ẨnBí Ẩn Tầng Gãy I
GermanRätsel um die Arpeggio-Verwerfung (A)
IndonesianMisteri Fraktur Arpegio (I)
PortugueseMistério da Falha do Arpejo (A)

Change History