| idol_id | 1117 |
| Selca owner | ngt48_nanachi |
| Pop type | J-Pop |
| Stage name (romanized) | Nanachi |
| Stage name (original) | ななち |
| Real name (romanized) | Otsuka Nanami |
| Real name (original) | 大塚七海 |
| Birth date | 2000-11-07 (age 24) ▲ ▼ |
| Chinese zodiac sign | 🐉 Dragon |
| Western zodiac sign | ♏ Scorpio |
| Hometown | Niigata Prefecture |
| Height | |
| Weight | |
| Blood type | A |
| Debut date | 2018-06-12 (6 years and 6 months ago) ▲ ▼ |
| Country of origin | 
Japan |
| Name | Company | Fandom | Debut date | Disbandment date | Current member | |
|---|---|---|---|---|---|---|
|
NGT48 | AKS | 2015-08-21 | Yes |