Appears on releases
| # | Title | Length | Track artist | Release title | Release artist | Release group type | Country/Date | Label | Catalog# |
|---|---|---|---|---|---|---|---|---|---|
| Official | |||||||||
| 1.2 | 負の前進 | 6:48 | Kra | クゥ | Kra | Single |
| PS COMPANY | PSTA-0045 |
| 1.2 | 負の前進 | 6:48 | Kra | クゥ | Kra | Single |
| PS music (2005-2009 - stands for Peace&Smile music) | KICM-10010 |
| 1.2 | 負の前進 | 6:48 | Kra | クゥ | Kra | Single |
| PSIM-20009 | |
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