All the RFA members rely on Jaehee for many things, especially Jumin.
When the members are sick, it is Jaehee who takes care of them.
She has been working under Jumin for over two years.
Her phone number is (+82)10-4720-#@ZZ
Her email is firstname.lastname@example.org - if you call her and redirected to her voicemail, she states her email address, and at one point it is in her status.
In her business card, her fax number is 02) 2-723-X#OJ.
It appears that in the good ending, Jaehee questions her sexuality while getting close to the player.
Although Jaehee talks about her friendship between her and the player, she brings up the fact that she was "excited over a girl," and that she was confused.
After the Christmas Special 2016, it is revealed that Jaehee is bisexual.
Jaehee's original route in the Casual Story is a mere friendship between her and the player. However, in the Christmas Special 2016, Jaehee and the player have romantic feelings for each other. This could mean that Jaehee's original route could be transformed into having a homosexual relationship with the player by the creators of the game.
She often takes walks around the park to de-stress herself from work.
Jumin says the only women who are by his side are Jaehee, and his cat, Elizabeth the 3rd.
Jaehee's procedure in cheering up Jumin whenever he is stressed or upset is complimenting Elizabeth the 3rd. Jaehee states that this is a successful way in lifting up his mood.
According to the RFA Orientation Guidebook:
Her special talents include judo and copy editing
She likes coffee and bento boxes, and dislikes nothing in particular as she eats everything.
Her most used apps are the calendar, phone, document viewer, and text.
She desires rest, a vacation, and an afternoon off.
Her favorite quote is: "Your happiness depends on what makes your soul sing."
If she were to end up in a love triangle with her friend, she would give up her love interest for her friend.
She has a habit of tapping her forehead with her pen.
Her ideal type is a healthy man so that they can live a long life together.
If she could have another job, she would have chosen a stable career as a government official.
She would like to go to one of Zen's shows for a first date.
She does not care for looks, but would like someone who shares the same values as her.
She would gift her date something he needs.
Yoosung believes Jaehee is the youngest chief assistant at C&R International.
She has good vision, but is forced to wear glasses as part of her attire as Jumin's secretary. She keeps her hair short as part of Jumin's demands as his secretary, as well.
She has long hair in her earlier draft.
Jaehee has a black belt in judo.
Jaehee is weak to alcohol, but does seem to like wine.
In the Orientation Guidebook's Heart to Heart section, Jaehee is the only person to be relied on if the RFA members were stranded in nowhere.
As a player, the voice actors of Jumin Han, Zen, and Unknown also choose to play her route since the guys in RFA are all "unique".