| | Name | KR Name | Group | Description |
|---|
| Officer Helmet | 장교 투구 | Armor | Decorations are attached to this helmet to demand respect. |
| Officer's Journal, Part 1 | 장교 일지 상편 | Book | The first part written by an officer of the Delmore Castle regarding his work. Readable. |
| Officer's Journal, Part 2 | 장교 일지 하편 | Book | The second part written by an officer of the Delmore Castle regarding his work. Readable. |
| Official Letter of Appointment | 공식 임명장 | Quest | Official Appraiser Master Nomination Document |
| Oil for the Blue Lamp | 푸른 램프의 기름 | Quest | Oil used when lighting the Blue Lamp. |
| Oil for the Red Lamp | 붉은 램프의 기름 | Quest | Oil used when lighting the Red Lamp. |
| Oil-Stained Fuse | 기름묻은 도화선 | Quest | Oil-Stained Fuse |
| Old Carving Knife | 낡은 조각칼 | Quest | An old carving knife. There's a name written on it but it's barely visible anymore. It could belong to a Dievdirbys. |
| Old Carving Knife | 낡은 조각칼 | Quest | An old carving knife. There's a name written on it but it's barely visible anymore. It could belong to a Dievdirbys. |
| Old Fishing Rod | 낡은 낚싯대 | FishingRod | Success chance: 7.1%
A basic rod to go fishing. Doesn't look too reliable. |
| Old Flute | 낡은 피리 | Quest | A flute for training given by the Pied Piper Master.
Use the flute in Branginti Hill on Altar Way.
Cooldown time 3 seconds. |
| Ominous Spirit Fragment | 불길한 영혼 파편 | Material | A spirit fragment exuding an ominous energy. Rumor has it this fragment can be used as a material to craft certain types of equipment. |
| One-piece Swimsuit Costume (Female) | 원피스 수영복 코스튬(여) | Premium | Go for the sporty look with this one-piece swimsuit. Use to change your appearance. |
| Onmyoji Royal Court Costume (Female) | 음양사의 왕실예복 코스튬(여) | Premium | A special outfit that was handed down from the royal family to the Onmyoji thousands of years ago. |
| Opaque Purification Liquid | 혼탁한 정제액 | Quest | A bottle given to you by Wizard Rimas, who claims it contains the purified strength of monsters. |
| Opinion about the Nheto Forest Painting | 네토 숲의 단풍화에 대한 소견서 | Book | Opinion about the Nheto Forest Paintings written by Chronomancer Master Lucid Winterspoon. Right-click to read. |
| Orange Lakhof Core | 주황 락코프의 핵 | Material | Material obtained from monsters.
Used for crafting. |
| Orange Minos Hoof | 주황 미노스 발굽 | Material | Thanks to their Netherbovine-like hooves, Minos can move rather quickly despite their heavy bodies.
Obtained from Orange Minos. |
| Orb Fragment | 구슬 조각 | Quest | A sparkly orb fragment found at the Evacuation Residential District. |
| Orb of Comfort | 위로의 구슬 | Quest | An orb prepared by the Bokor Master in order to soothe the souls of the unjustly slain people of the town of Andale. |
| Orb of Divine Detection | 신성력 탐지 구슬 | Quest | An Orb of Divine Detection crafted by the Kupole. It will react to any divine energy in the area. |
| Orb of Divine Detection | 성력 탐지 구슬 | Quest | An orb that can detect holy power.
It can help the user find the Graceful Relic. |
| Orb of Dominance Magic | 영역 지배 마법의 보주 | Quest | An orb that contains Dominance Magic. You must sacrifice life or something equal to that in order to use the Domain Dominance magic. |
| Orb of Guidance | 안내의 보주 | Quest | An orb that guides you through the steps of the Exorcist test. Use the orb when you are stuck while undertaking the tasks for the Exorcist test. |
| Orb of Nostalgia | 망향의 구슬 | Quest | A jewel that instantly teleports you to a saved location.
Cooldown of 15 minutes |
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