Watch: SF9's Rowoon And Won Jin Ah Get Playful While Rehearsing For "She Would Never Know"

JBTC shared a new behind-the-scenes video of the set of “She Would Never Know”!

“She Would Never Know” is a drama about the complicated office romance between two co-workers on the marketing team for a cosmetics brand called Klar. Won Jin Ah stars as the perfectionist Yoon Song Ah, while SF9’s Rowoon plays her dashing younger colleague Chae Hyun Seung.

The new making-of video begins with the scene in which the Klar cosmetics team go out for dinner together. Despite the scene taking place at dinner, the cast filmed at 9 a.m. in the morning. Rowoon comments, “This is perfect to film as the first scene in the morning. We can get wide awake and then film the rest.”

The actors film multiple takes of the scene in which Chae Hyun Seung accidentally confesses that he likes Yoo Jae Kyung (Yang Jo Ah) instead of Yoon Song Ah, which includes Yang Jo Ah spitting out her drink. The cast compliments Yang Jo Ah for getting better at spitting out her drink as they film multiple takes.

When Rowoon joins Won Jin Ah for a different scene, Won Jin Ah comments, “I think you’re 10 heads tall,” referring to a way of measuring body proportion. She continues, “When I stand next you, I just think you’re pretty tall, but when you came out of that car, I thought your proportions were really large.” Rowoon replies, “I’ll take that as a compliment. Thanks.”

Won Jin Ah shivers too much while filming, so the director thoughtfully hands her two hand warmers. Upset, Rowoon calls out to the director and pretends to shiver. The director replies, “Go run a lap.” Rowoon pretends to go run a lap and yells, “That’s going too far.”

Watch the full making-of video below!

“She Would Never Know” airs on Mondays and Tuesdays at 9 p.m. KST.

Watch Won Jin Ah in “Melting Me Softly” below!

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