| Full Name | Sakamoto Mashiro |
| Stage Name | Mashiro |
| Native Name | 坂本 舞白 |
| Birthday | December 16, 1999 |
| Age | 25 years and 5 months old |
| Zodiac Sign | Sagittarius |
| Birthplace | Setagaya-ku, Tokyo, Japan |
| Height | 5’2″ (158 cm) |
| Weight | 92.6 lbs (42 kg) |
| Blood Type | AB |
| MBTI | ISFP |
| Education | – |
| Languages | Japanese, Korean, English, Mandarin |
| Group | MADEIN Kep1er (2021 – July 15, 2024) |
| Social Media | Instagram: [@shir0._.chann] |