released on August 7, 2013.
![Summer Lion (Regular Edition) [CD]](https://www.j-enta.com/fotos/2610.jpg "Summer Lion (Regular Edition) [CD]") | Summer Lion (Regular Edition) [CD]
Catalog: PCCA-70373 | | 1. | Summer Lion (サマーライオン) | 3:49 | | 2. | Natsuiro Kiss☆ (夏色キッス☆) | 4:48 | | 3. | Summer Lion (Instrumental) (サマーライオン (Instrumental)) | | | 4. | Natsuiro Kiss☆ (Instrumental) (夏色キッス☆ (Instrumental)) | |
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![Summer Lion (Type A) [CD+DVD]](https://www.j-enta.com/fotos/2611.jpg "Summer Lion (Type A) [CD+DVD]") | Summer Lion (Type A) [CD+DVD]
Catalog: PCCA-3842 | | 1. | Summer Lion (サマーライオン) | 3:49 | | 2. | Natsuiro Kiss☆ (夏色キッス☆) | 4:48 | | 3. | Ohisama Darling (おひさまダーリン) | 4:25 | | 4. | Natsuiro Kiss☆ (Producer’s Edit) (夏色キッス☆ (Producer’s Edit)) | 4:47 | | 5. | Summer Lion (サマーライオン) | 3:49 |
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![Summer Lion (Type B) [CD+Bluray]](https://www.j-enta.com/fotos/2612.jpg "Summer Lion (Type B) [CD+Bluray]") | Summer Lion (Type B) [CD+Bluray]
Catalog: PCCA-3843 | | 5. | Summer Lion (サマーライオン) | 3:49 | | 1. | Summer Lion (サマーライオン) | 3:49 | | 2. | Natsuiro Kiss☆ (夏色キッス☆) | 4:48 | | 3. | 3nen-me no Uwaki (３年目の浮気) | 3:39 | | 4. | Summer Lion (Producer’s Edit) (サマーライオン (Producer’s Edit)) | 3:47 |
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![Summer Lion (Type C) [CD]](https://www.j-enta.com/fotos/2613.jpg "Summer Lion (Type C) [CD]") | Summer Lion (Type C) [CD]
Catalog: PCCA-3885 | | 1. | Summer Lion (サマーライオン) | 3:49 | | 2. | Natsuiro Kiss☆ (夏色キッス☆) | 4:48 | | 3. | Milky Girl (ミルキーガール) | 4:03 |
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