Iin Ja nai? / Futsuu no Watashi Ganbare! いいんじゃない？／普通の私 ガンバレ！
Released July 1, 2015 Editions 3
Regular edition · Regular A
| 1 | Iin Ja nai? | A-side |
| 2 | Futsuu no Watashi Ganbare! | A-side |
| 3 | Desert of a moonlit night ~Tsukuyo no Sabaku~ (Instrumental) | |
| 4 | Iin Ja nai? (Instrumental) | |
| 5 | Futsuu no Watashi Ganbare! (Instrumental) |
Regular edition · Regular B
| 1 | Iin Ja nai? | A-side |
| 2 | Futsuu no Watashi Ganbare! | A-side |
| 3 | Princess of lone castle ~Kojou no Himegimi~ (Instrumental) | |
| 4 | Iin Ja nai? (Instrumental) | |
| 5 | Futsuu no Watashi Ganbare! (Instrumental) |
Limited edition · Limited
| 1 | Iin Ja nai? | A-side |
| 2 | Futsuu no Watashi Ganbare! | A-side |
| 3 | Iin Ja nai? (Instrumental) | |
| 4 | Futsuu no Watashi Ganbare! (Instrumental) |