Sana ranked #18 of the most preferred Kpop idols in 2019 by Gallup. Her and Mina were also the only foreigners on this list. This poll was voted by 1502 people, age 13-29.

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Video source: https://youtu.be/jCy0zGc4m6c

Sana ranked #9 in the poll "Most favorite foreigner stars in Korea" and she is the only female idol in this list. This poll was conducted by KBS and voted by 1058 people.

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Source: http://www.topstarnews.net/news/articleView.html?idxno=672853

Sana ranked #3 in a poll "Idols who look elegant with blonde hair", after V (BTS) and Bae Jinyoung (Wanna One)

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Extra:

Sana was mentioned in workman episode 34.

Video source: https://youtu.be/DiUIl2hKdFE

EXO's manager: "You can sit with whichever member you prefer."

Jang SungKyu (JSK): "I have a favorite member."

(Caption: Who is it?)

JSK: Sana.