Appears on releases
| # | Title | Length | Track artist | Release title | Release artist | Release group type | Country/Date | Label | Catalog# |
|---|---|---|---|---|---|---|---|---|---|
| Official | |||||||||
| 1.4 | REGRETS | 4:36 | KAN | ゴールデン☆ベスト | KAN | Album + Compilation |
| UM³/USM Japan | UICZ-6058 |
| 1.14 | REGRETS | 4:35 | KAN | ザ・プレミアム・ベスト KAN | KAN | Album + Compilation |
| USM JAPAN (read the annotation before using!) | UPCY-6517 |
| 1.4 | REGRETS | 4:35 | KAN | ゴールデン☆ベスト (期間限定スペシャル・プライス盤) | KAN | Album + Compilation |
| UM³/USM Japan | UPCY-9275 |
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