Ju Sung-ji

Sung Sung-Ji is a member of the Management Team in Hello Studio. She's one of the main characters of the manhwa 'What Does the Fox Say?'. She is the love interest of Sung Sumin.

Appearance
Sung-Ji is thin, with pale complexion, almost like a doll. She has amber eyes and blonde hair, which is usually let down, and her height is about 5'5 ''. Her outfit changes throughout the story but she's mostly seen in casual clothing. People around her describe her as 'beautiful' but she's so overwhelmed about the topic since she was a child that she doesn't use that term to describe herself.

Personality
Sung-Ji is a calm, introverted, curious, polite person, a little insecure but straightforward when speaking. She usually has a sharp expression and people think it's because she's angry or upset, but it's actually because she struggles with her emotions. Throughout the story, she gets bolder and is confident enough to express herself more and even flirt openly with Sumin. She usually listens and observes more than speaks.

In WDTFS:
Sung-Ji joins Hello Studio as a new employee of the Management Team, where she meets Sung Sumin, her boss. That same day is when Sumin gives Sung-Ji her lunch since the blonde didn't eat and a stuffed fox as a present, being that what starts everything.

Through the story, Sung-Ji gets wooed a lot from Choi Geon, one of her co-workers in the Team, while she discovers her feelings for Sumin -through a lot of time spent together- until she tells him she's not interested in him. It's also seen that Sung-Ji has had a lot of suitors since she was younger, but she never felt anything until she met Sumin.

When she and the dark-haired start dating, despite Sumin's experience with relationships, they slow down in terms of decisions, as it was the first time that Sung-Ji had been in love. Their relationship throughout history matures over time until the presence of Baek Seju tried to ruin it all for revenge against Sumin. Later Sung-Ji gets in a relationship with Kim Dawoon, an old friend from school, but they break up after Sung-Ji realizes her true love is Sumin. However, one day she discovers Seju and Sumin in a compromised situation and she and Sumin break up. Sumin tries to get her back, but the blonde didn't know if doing that or forgetting her since Sumin wasn't clear with her emotions. Finally, Sumin looks for her at a wedding from one of Sung-Ji's friends in order to amend the problems around them and start again, what Sung-Ji accepts.

In the end, Seung-Ji leaves her brother's house and moves with Sumin. While fixing her belongings from the boxes, she takes out the stuffed fox Sumin gave her the first time they met, which used to remind her of her boss. Then the blonde turns around, asking her suggestively "What does the fox say?", at what Sumin simply replies: "Why don't we find out?".

In WDTFS: Paradise
Sung-Ji appears in a School Day's special in which she, Sumin, and Seju are in the same institute and Sung-Ji discovers the pair making up in a corner. It's an alternate story in which Sumin and Seju are a messy couple and the blonde is a member of the Student Council.

In WDTFS: Simple is best
TBA

In WTDFS: Will
It's 2019 and Sumin and Sung-Ji are living their best life together. Sung-Ji now is now the manager of the Management Team of Hello Studio but Sumin is still her boss.

After everything she has passed, Sumin notices that she and Seung-Ji are nothing in legal terms so she looks for a lawyer who would help her with some important procedures so, if one that the dark-haired died like her parents since she's a target of big politicians, at least Sung-Ji would get her belongings. This is unknown by Seung-Ji, who thanks to Nam Mi thinks Sumin is cheating on her with one of her ex's. Yet at the end, and three years later than Sumin was planning, Sumin proposes marriage to Seung-Ji, at which the blonde accepts after listening to Sumin's explanation about 'her ex'. In the end, they go out to enjoy the first snow together.

Trivia

 * Her blood type is O.
 * She has the appearance of a foreigner but is actually born in Korea.
 * She has an older brother.
 * She has a puppy, his name is Pporong.
 * Sung-Ji appears with Sumin on a Valentine's Day special in which both make a chocolate cake.