| Full Name | Arai Ayaka |
| Stage Name | Ayaka |
| Native Name | 新井彩香 |
| Birthday | June 20, 2003 |
| Age | 22 years old |
| Zodiac Sign | Gemini |
| Birthplace | Tokyo, Japan |
| Height | 5’6″ (167 cm) |
| Weight | – |
| Blood Type | A |
| MBTI | ESTJ |
| Education | Itabashi Ward Akatsukadaiichi Junior High School |
| Languages | Japanese, Korean |
| Group | NiziU |
| Social Media | – |