Appears on releases
| # | Title | Length | Track artist | Release title | Release artist | Release group type | Country/Date | Label | Catalog# |
|---|---|---|---|---|---|---|---|---|---|
| Official | |||||||||
| 2.2 | それだけでうれしい | 5:36 | THE BOOM | Singles+ | THE BOOM | Album + Compilation |
| Sony Records (Japanese imprint) | SRCL-4467, SRCL-4468 |
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