Appears on releases
| # | Title | Length | Track artist | Release title | Release artist | Release group type | Country/Date | Label | Catalog# |
|---|---|---|---|---|---|---|---|---|---|
| Official | |||||||||
| 1.3 | at that time | 3:52 | 悠然 feat. 初音ミク | Synergy-Style Vol.4 | Sakura Recordz! | Album + Compilation |
| Sakura Recordz! (dōjin circle) | |
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