AO - EP
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Disc1
| 1 | AO | Ryu☆ | 5:53 |
| 2 | Triangular Number | Ryu☆ | 5:54 |
| 3 | Postal Administration | Ryu☆ | 3:45 |
| 4 | Abstract Algebra | Ryu☆ | 4:52 |
| 5 | Plan E | Ryu☆ | 4:30 |
| 6 | HinaMatsuri (Ryu☆Remix) | Ryu☆ | 1:42 |
| 7 | AO - EP MegaMix | Ryu☆ | 5:15 |
| 1 | AO | Ryu☆ | 5:53 |
| 2 | Triangular Number | Ryu☆ | 5:54 |
| 3 | Postal Administration | Ryu☆ | 3:45 |
| 4 | Abstract Algebra | Ryu☆ | 4:52 |
| 5 | Plan E | Ryu☆ | 4:30 |
| 6 | HinaMatsuri (Ryu☆Remix) | Ryu☆ | 1:42 |
| 7 | AO - EP MegaMix | Ryu☆ | 5:15 |