| Official |
|---|
| 2.1 | Mission possible 〜but difficult task〜 | 2:22 | 折戸伸治 | リトルバスターズ! Original Soundtrack | Various Artists | Album + Soundtrack | | Key Sounds Label | KSLA-0033, KSLA-0034, KSLA-0035 |
| 1.21 | Mission possible ~but difficult task~ | 2:22 | VISUAL ARTS / Key | リトルバスターズ! ORIGINAL SOUNDTRACK | VISUAL ARTS / Key | Album + Soundtrack | | Key Sounds Label | |
| 1.16 | Mission possible 〜 but difficult task 〜 | 2:24 | 折戸伸治 | アニメション 「クドわふたー」 オリジナルサウンドトラック | Various Artists | Album + Soundtrack | | Key Sounds Label | KSLA-0174, KSLA-0175 |
| 1.18 | Mission possible~but difficult task~ | 2:23 | 折戸伸治 | アニメ『かぎなど』Original SoundTrack | Various Artists | Album + Soundtrack | | Key Sounds Label | KSLA-0189, KSLA-0190, KSLA-0191, KSLA-0192, KSLA-0193 |
| 1.18 | Mission possible~but difficult task~ | 2:20 | 折戸伸治 | アニメ『かぎなど』Original SoundTrack | Various Artists | Album + Soundtrack | | Key Sounds Label | |
| 1.18 | Mission possible ~but difficult task~ | 2:20 | 折戸伸治 | アニメ『かぎなど』Original SoundTrack | Various Artists | Album + Soundtrack | | Key Sounds Label | |
| Pseudo-Release |
|---|
| 2.1 | Mission possible ~but difficult task~ | 2:22 | Shinji Orito | Little Busters! Original Soundtrack | Various Artists | Album + Soundtrack | | | |