Appears on releases
| # | Title | Length | Track artist | Release title | Release artist | Release group type | Country/Date | Label | Catalog# |
|---|---|---|---|---|---|---|---|---|---|
| Official | |||||||||
| 1.34 | 友達の手 | 1:27 | 中河健 | Mana-Khemia Original Soundtrack | 中河健 & 阿知波大輔 | Album + Soundtrack |
| TEAM Entertainment Inc. | KDSD-10025, KDSD-10026 |
| 17.34 | 友達の手 | 1:27 | 中河健 | ガスト20周年記念CDボックス (数量限定生産) | Various Artists | Album + Compilation + Soundtrack |
| KOEI (video game music) | KECH-8005 |
| Pseudo-Release | |||||||||
| 17.34 | A Friend's Hand | 1:27 | 中河健 | GUST 20th ANNIVERSARY CD BOX | Various Artists | Album + Compilation + Soundtrack | |||
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