A beautiful photographer Son Ji-hyeon who has done her disorderly past, is an attractive career woman who has a movie poster shooting and even a private exhibition ahead.
문란한 과거를 청산한 미모의 포토그래퍼 손지현은 영화 포스터 촬영과 개인전 준비까지 앞둔 매력적인 커리어우먼이다.
>> 과거를 청산하다는 bury the past인데 문란한 과거이므로 bury the messy past정도일 것입니다. 보다 나쁜 뜻이라면 bury the indecent past가 되겠지만 너무 잔인한 표현일 것입니다. 따라서 문장은 이렇게 바뀝니다.
A beautiful photographer Son Jihyeon, who has buried her messy past, is an attractive career woman who has a movie poster shooting and even a private exhibition ahead.

 
A special makeup artist Jun-seo who looks forward to opening Ji-hyeon's mind, is all over her variously everyday.
이런 지현을 오매불망 바라보는 특수분장사 준서는 하루하루 다양한 애정공세를 펼친다.
>> 오매불망 바라본다는 우리말 표현이 bear in mind all the time을 쓰면 될 것이고 애정공세는 give all one's love to를 쓰면 될 것입니다. 따라서 문장은 이렇게 바뀝니다.
A special makeup artist Junseo, who bears her in his mind all the time, gives all his love to her day by day.
 

One day she was having a sweet time with him, a boy named Yu-bin who ran away from home to find his biological father, beaks into her home and he says that his biological father's name is Son Ji-hyeon.
준서와의 달콤한 로맨스가 무르익던 어느날, 친아빠를 찾아 가출한 유빈이란 녀석이 난데없이 집을 찾아오고, 녀석이 말한 아빠의 이름은 바로 손.지.현.
>> 전체적으로 현재형으로 기술하기에 뚜렷한 과거형인 가출을 빼고 동사를 현재형으로 바꿉니다.
Around a day when she is getting into sweet romance with Junseo, a boy Yubin, who left his home to find his biological father, comes to her house saying that his father's name is Son Jihyeon.
 

First, she lie to him that she is just his aunt but it is not acceptable to him
일단 고모라고 둘러대고 녀석을 돌려보내려고 하지만, 유빈에겐 통하지 않는다.
>> 거짓말하다라는 동사 lie가 타동사이기에 전치사 to는 빠지고 3인칭 현재므로 lies가 됩니다.
For the moment, she lies Yubin as if she is a paternal aunt to him and tries to send him back but fails it to him.
 

Moreover, his mother and step father are on a business trip.
게다가 녀석의 엄마와 새아빠는 출장 중이다.
>> Moreover, his mother and stepfather are on their business trip.
 

Because there have no choice but to take care of him, she becomes a beautiful father as she tries to disguise herself as a man.
그를 돌보는것 외에 별다른 선택이 없었기에 그녀는 남장을 하면서 미녀아빠가 된다.
>> 별 다른 선택, on other choice는 다른 말로 no alternative지요.
Because there's no alternative except caring him, she becomes a beautiful father as she disguises herself as a man.
 

But because of her clumsy makeup, the worst althletic ability and frequent her feminine way of speaking, Yu-bin thinks she is something weird, and her boy-friend Jun-seo begins to doubt her because she avoids date with him recently.
그러나, 어설픈 변장과 빵점짜리 운동신경, 잦은 여자말투때문에 유빈은 그녀가 뭔가 이상하다고 생각하고, 최근들어 데이트를 피하는 지현때문에 남자친구 준서는 의심을 하기 시작한다.
>> 이상하다고 생각하는 것도 의심이라는 단어 suspect로 표현이 됩니다.
But, Yubin suspects her because of sloppy disguise, poor sense in sports and repeated manner of feminine speech while her boyfriend Junseo suspects her as she avoids dating with him recently.
 

Between Yu-bin and Jun-seo, she has to get through a crisis before she is caught but, she doesn't know why, Ji-hyeon becomes attached to Yu-bin whose even habit resembles with her.
유빈과 준서사이에서, 그녀는 들키기전에 위기를 벗어나야 하지만 왠일인지 지현은 버릇마저 똑같은 유빈과 정이든다.
>> 통상 영어로 표현할 때 앞에 사람이름이 나오면 그 다음에 그 사람을 대명사로 나타냅니다. 물론 여럿이 있어 분명치 않을 경우에는 이름이 계속 나옵니다. 여기서도 지현, 유빈, 준수가 처음 나올 때는 이름을 그 다음에는 대명사로 씁니다.
Although Jihyeon should get through a crisis between Yubin and Junseo before being caught, she becomes attached to Yubin who has the same habit with her for some reason.