Wakatteiru no ni Gomen ne / Tamerai Summertime わかっているのにごめんね／ためらいサマータイム
Released August 5, 2015 Editions 6 Tracks 2
Regular edition · Regular A
| 1 | Wakatteiru no ni Gomen ne | A-side |
| 2 | Tamerai Summertime | A-side |
| 3 | Wakatteiru no ni Gomen ne (Instrumental) | |
| 4 | Tamerai Summertime (Instrumental) |
Regular edition · Regular B
| 1 | Wakatteiru no ni Gomen ne | A-side |
| 2 | Tamerai Summertime | A-side |
| 3 | Wakatteiru no ni Gomen ne (Instrumental) | |
| 4 | Tamerai Summertime (Instrumental) |
Limited edition · Limited A
| 1 | Wakatteiru no ni Gomen ne | A-side |
| 2 | Tamerai Summertime | A-side |
| 3 | Wakatteiru no ni Gomen ne (Instrumental) | |
| 4 | Tamerai Summertime (Instrumental) |
Limited edition · Limited B
| 1 | Tamerai Summertime | A-side |
| 2 | Wakatteiru no ni Gomen ne | A-side |
| 3 | Tamerai Summertime (Instrumental) | |
| 4 | Wakatteiru no ni Gomen ne (Instrumental) |
Limited edition · Limited C
| 1 | Wakatteiru no ni Gomen ne | A-side |
| 2 | Tamerai Summertime | A-side |
| 3 | Wakatteiru no ni Gomen ne (Instrumental) | |
| 4 | Tamerai Summertime (Instrumental) |
Limited edition · Limited D
| 1 | Tamerai Summertime | A-side |
| 2 | Wakatteiru no ni Gomen ne | A-side |
| 3 | Tamerai Summertime (Instrumental) | |
| 4 | Wakatteiru no ni Gomen ne (Instrumental) |