---
title: "GO-4 Ending a Grand Overture Drop Rates (JP server)"
description: "GO-4 Ending a Grand Overture drop rates on the JP server: Orirock Cube 164.85%, Polyester 56.42%, Furniture 1.44%; 1,044 samples (2025-04-08 to 2025-04-22). Sanity cost 12. Updated 2026-10-23. Crowdsourced Arknights drop data by Penguin Statistics."
lang: en
server: JP
zone_id: "act37side_zone1"
stage_id: "act37side_04"
as_of: 2026-10-23T14:49:35Z
time_zone: UTC+9
rows: 3
rows_total: 3
canonical: "https://penguin-stats.io/en/result/jp/stage/act37side_zone1/act37side_04"
api: "https://penguin-stats.io/PenguinStats/api/v2/result/matrix?server=JP&stageFilter=act37side_04&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-4 Ending a Grand Overture Drop Rates (JP server)

Server: [CN server](https://penguin-stats.io/en/result/cn/stage/act37side_zone1/act37side_04.md) · [US server](https://penguin-stats.io/en/result/us/stage/act37side_zone1/act37side_04.md) · **JP server** · [KR server](https://penguin-stats.io/en/result/kr/stage/act37side_zone1/act37side_04.md)

Sanity: 12

Item drops of GO-4 Ending a Grand Overture on the JP server, by percentage, highest first

| Item | ID | Loots | Samples | Percentage | Sanity Required Per Item | Time Range |
| --- | --- | ---: | ---: | ---: | ---: | --- |
| [Orirock Cube](https://penguin-stats.io/en/result/jp/item/30012.md) | `30012` | 1721 | 1044 | 164.85% | 7.28 | 2025-04-08 to 2025-04-22 |
| [Polyester](https://penguin-stats.io/en/result/jp/item/30032.md) | `30032` | 589 | 1044 | 56.42% | 21.27 | 2025-04-08 to 2025-04-22 |
| [Furniture](https://penguin-stats.io/en/result/jp/item/furni.md) | `furni` | 15 | 1044 | 1.44% | 835.07 | 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 23:49 (UTC+9). [Full data (JSON)](https://penguin-stats.io/PenguinStats/api/v2/result/matrix?server=JP&stageFilter=act37side_04&show_closed_zones=true). License: [CC BY-NC 4.0](https://creativecommons.org/licenses/by-nc/4.0/)