| 105622 | Investigation Suspicion | enemies |
| 107935 | Investigation of the suspicious location | enemies |
| 121528 | Investigation Site | NPCs |
| 124101 | Investigation Point | NPCs |
| 201593 | Investigation Report | Items |
| 202805 | Investigation Report | Items |
| 203977 | Investigation Report | Items |
| 206423 | Ruins Investigation Team Medal | Items |
| 206426 | Ancient Treasures Investigation Record | Items |
| 207952 | Ancient Treasures Investigation Record (1 Day) | Items |
| 208394 | Investigation Report | Items |
| 221222 | Valley Investigation Belt | armor |
| 221454 | Silverspring Investigation Gloves | armor |
| 221455 | Silverspring Investigation Handguards | armor |
| 221456 | Silverspring Investigation Scale Gauntlets | armor |
| 222037 | Spy's Investigation Gloves | armor |
| 223229 | Scroll Investigation Belt | armor |
| 229733 | Investigation Hood | armor |
| 240656 | Investigation Records | Items |
| 240839 | Camp Fire Investigation Book | Items |
| 243990 | Medanor Investigation Report | Items |
| 243992 | Engwor Investigation Report | Items |
| 243993 | Sternhorn Investigation Report | Items |
| 243994 | Tomara Investigation Report | Items |
| 420578 | Aslan Hairy Frog Investigation | quests |
| 420581 | Anteater Investigation | quests |
| 420582 | Green-spotted Fungus Investigation | quests |
| 421544 | Secret Investigation | quests |
| 421636 | (C)overt Investigations | quests |
| 421939 | Obtain Investigation Information | quests |