Appears on releases
| # | Title | Length | Track artist | Release title | Release artist | Release group type | Country/Date | Label | Catalog# |
|---|---|---|---|---|---|---|---|---|---|
| Official | |||||||||
| 5.14 | 空色スマイル | 4:46 | 榊原ゆい | solfa 15th Anniversary Premium Music Box: GO BEYOND | solfa | Album + Compilation |
| Marble Sky Records | MSRC-130, MSRC-131, MSRC-132, MSRC-133, MSRC-134 |
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