Bye Bye Happy Days! is the eighth Japanese single by KARA. It was released on March 27, 2013.
Track listing[]
| No. | Title | Length |
|---|---|---|
| 1. | "Bye Bye Happy Days! (バイバイ ハッピーデイズ!)" | 4:36 |
| 2. | "My Boy (マイボーイ)" | 3:24 |
| 3. | "Bye Bye Happy Days! (Instrumental)" | 4:36 |
| 4. | "My Boy (Instrumental)" | 3:25 |
| No. | Title | Length |
|---|---|---|
| 5. | "Beautiful Night" | 3:26 |
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