released on May 21, 2014.
| Labrador Retriever (Type 4) (Ltd. Edition) [CD+DVD] Catalog: KIZM-90289 | |
| Labrador Retriever (Type 4) (Regular Edition) [CD+DVD] Catalog: KIZM-289 | |
| Labrador Retriever (Type A) (Ltd. Edition) [CD+DVD] Catalog: KIZM-90283 | 1. | Labrador Retriever (ラブラドール・レトリバー) | | 2. | Kyou Made no Melody (今日までのメロディー) | | 3. | Kimi wa Kimagure (君は気まぐれ) | | 4. | Labrador Retriever (off Vocal Ver.) (ラブラドール・レトリバー (off Vocal Ver.)) | | 5. | Kyou Made no Melody (off Vocal Ver.) (今日までのメロディー (off Vocal Ver.)) | | 6. | Kimi wa Kimagure (off Vocal Ver.) (君は気まぐれ (off Vocal Ver.)) | |
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| Labrador Retriever (Type A) (Regular Edition) [CD+DVD] Catalog: KIZM-283 | |
| Labrador Retriever (Type B) (Ltd. Edition) [CD+DVD] Catalog: KIZM-90287 | |
| Labrador Retriever (Type B) (Regular Edition) [CD+DVD] Catalog: KIZM-287 | |
| Labrador Retriever (Type K) (Ltd. Edition) [CD+DVD] Catalog: KIZM-90285 | |
| Labrador Retriever (Type K) (Regular Edition) [CD+DVD] Catalog: KIZM-285 | |