relations sister×sister. サウンドトラックCD
AlbumTracklist 86:57
CD 1
| 1 | LOVE HEART Hiromi | 3:36 | |
| 2 | warmth Hiromi | 4:49 | |
| 3 | DEAR Hiromi | 4:40 | |
| 4 | LOVE HEART -off vocal ver.- Hiromi | 3:36 | |
| 5 | warmth -off vocal ver.- Hiromi | 4:49 | |
| 6 | DEAR -off vocal ver.- Hiromi | 4:38 |
CD 2
| 1 | LOVE HEART (one piece) TremoloVibration | 1:27 | |
| 2 | Adored Girl TremoloVibration | 3:01 | |
| 3 | Princess Girl TremoloVibration | 2:47 | |
| 4 | Childhood Friend Girl TremoloVibration | 2:58 | |
| 5 | Genius Girl TremoloVibration | 2:31 | |
| 6 | Elegant Girl TremoloVibration | 2:40 | |
| 7 | 優しいお姉さん TremoloVibration | 2:32 | |
| 8 | 気持ちのいい朝 TremoloVibration | 2:49 | |
| 9 | 楽しい日々 TremoloVibration | 2:49 | |
| 10 | 退屈な日常 TremoloVibration | 2:47 | |
| 11 | たまにはこんな日も TremoloVibration | 2:46 | |
| 12 | お洒落にデート TremoloVibration | 3:09 | |
| 13 | ハプニング！ TremoloVibration | 2:26 | |
| 14 | 夕焼けの街 TremoloVibration | 3:09 | |
| 15 | お疲れ様 TremoloVibration | 2:50 | |
| 16 | Blauへようこそ！ TremoloVibration | 2:44 | |
| 17 | お忙しいですか？ TremoloVibration | 2:42 | |
| 18 | 焦燥感 TremoloVibration | 2:42 | |
| 19 | ひび割れた硝子 TremoloVibration | 2:47 | |
| 20 | 古いレコード TremoloVibration | 3:09 | |
| 21 | つのる想い TremoloVibration | 3:11 | |
| 22 | 想い重ねて TremoloVibration | 2:53 |