| 歌曲 | 试听 | 歌词 | 收藏 | 送歌 |
| Intro |  |
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| Happiness (Main Theme) | |
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| 疗养院的道路 | |
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| 初相遇 | |
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| 幸福的国度(Trio. Ver) | |
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| 郊游 | |
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| 初吻 | |
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| 幸福的日子常在 | |
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| Je Crois Entendre Encore | |
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| Happiness (Piano Ver) | |
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| Nocturne for 'Happiness' | |
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| 最后的旅行 | |
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| 安静而神圣的夜晚 | |
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| Ending | |
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| 幸福的国度（Ending) | |
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