---
title: "GO-1 Ending a Grand Overture Drop Rates (KR server)"
description: "GO-1 Ending a Grand Overture drop rates on the KR server: Orirock 43.33%, Diketon 25.00%, Ester 23.33%; 60 samples (2025-04-08 to 2025-04-22). Sanity cost 9. Updated 2026-10-23. Crowdsourced Arknights drop data by Penguin Statistics."
lang: en
server: KR
zone_id: "act37side_zone1"
stage_id: "act37side_01"
as_of: 2026-10-23T14:30:59Z
time_zone: UTC+9
rows: 7
rows_total: 7
canonical: "https://penguin-stats.io/en/result/kr/stage/act37side_zone1/act37side_01"
api: "https://penguin-stats.io/PenguinStats/api/v2/result/matrix?server=KR&stageFilter=act37side_01&show_closed_zones=true"
license: CC BY-NC 4.0
license_url: https://creativecommons.org/licenses/by-nc/4.0/
attribution: "Data: Penguin Statistics (penguin-stats.io), CC BY-NC 4.0"
---

# GO-1 Ending a Grand Overture Drop Rates (KR server)

Server: [CN server](https://penguin-stats.io/en/result/cn/stage/act37side_zone1/act37side_01.md) · [US server](https://penguin-stats.io/en/result/us/stage/act37side_zone1/act37side_01.md) · [JP server](https://penguin-stats.io/en/result/jp/stage/act37side_zone1/act37side_01.md) · **KR server**

Sanity: 9

Item drops of GO-1 Ending a Grand Overture on the KR server, by percentage, highest first

| Item | ID | Loots | Samples | Percentage | Sanity Required Per Item | Time Range |
| --- | --- | ---: | ---: | ---: | ---: | --- |
| [Orirock](https://penguin-stats.io/en/result/kr/item/30011.md) | `30011` | 26 | 60 | 43.33% | 20.77 | 2025-04-08 to 2025-04-22 |
| [Diketon](https://penguin-stats.io/en/result/kr/item/30051.md) | `30051` | 15 | 60 | 25.00% | 36.00 | 2025-04-08 to 2025-04-22 |
| [Ester](https://penguin-stats.io/en/result/kr/item/30031.md) | `30031` | 14 | 60 | 23.33% | 38.57 | 2025-04-08 to 2025-04-22 |
| [Damaged Device](https://penguin-stats.io/en/result/kr/item/30061.md) | `30061` | 12 | 60 | 20.00% | 45.00 | 2025-04-08 to 2025-04-22 |
| [Sugar Substitute](https://penguin-stats.io/en/result/kr/item/30021.md) | `30021` | 10 | 60 | 16.67% | 54.00 | 2025-04-08 to 2025-04-22 |
| [Oriron Shard](https://penguin-stats.io/en/result/kr/item/30041.md) | `30041` | 9 | 60 | 15.00% | 60.00 | 2025-04-08 to 2025-04-22 |
| [Furniture](https://penguin-stats.io/en/result/kr/item/furni.md) | `furni` | 1 | 60 | 1.67% | 539.89 | 2025-04-08 to 2025-04-22 |

Samples: runs of the stage reported in the time range. Loots: total number of the item dropped in those runs. Percentage = Loots ÷ Samples, the expected number dropped per run, which can exceed 100%. Sanity Required Per Item = Sanity ÷ Percentage. Time Range: since the drop table of the stage last changed.

Updated 2026-10-23 23:30 (UTC+9). [Full data (JSON)](https://penguin-stats.io/PenguinStats/api/v2/result/matrix?server=KR&stageFilter=act37side_01&show_closed_zones=true). License: [CC BY-NC 4.0](https://creativecommons.org/licenses/by-nc/4.0/)