- Sada (Sa/na and Da/hyun)
- Dahna (Dah/yun and Sa/na)
- Dana (D/ahyun and S/ana)
- Sahyun (Sa/na and Da/hyun)
- They are both the craziest and dorkiest in the group.
- .Both weigh 48kg.
- Sana is from Japan while Dahyun is from Korea.
- Sana was born in 1996 while Dahyun was born in 1998.
- They are in the group called Twice.
- Sana has confessed multiple times to Dahyun. "The moon is beautiful tonight isn't it Dahyunnie?~" "Dahyun is a liar....I love liars."
- Dahyun has consecutively said (4 times) she would date Sana when asked 'Which Twice member would you date?'
- During 'Twice In Switzerland', 'The HeartShaker Livestream', and a couple other V-lives, Sana and Dahyun had repeatedly said, "Saida is the best!"
- Sana and Dahyun has explained that the infamous 'i' from Saida comes from the korean word of soda (or lemon-lime soda), that's why it is named Saida and not SaDa.
- Dahyun used to call Sana 'Shy, shy, shy, Sana' and tease her of her aegyo in Cheer Up.
| To view the SaiDa gallery, click here.