Link:
http://sugoideas.com/drama-2011/startling-by-each-step/
http://www.viki.com/channels/2978-startling-step-by-step-bu-bu-jing-xin
SUGOIDEA SUM:
Zhang Xiao, a contemporary, ethnically Han Chinese young woman from the 21st century, accidentally travels back in time to the Qing Dynasty period during the reign of Kangxi Emperor after experiencing a deadly combination of traffic collision and electrocution, resulting her somehow reliving the life of one of her previous incarnations and forcing her to assumes the identity belongs to her past avatar: Maertai Rexi, teenage daughter of a Manchu nobleman, who also had a near-fatal incident in her own time which Zhang awakes from.
Being stranded in the past, in the body of a centuries earlier incarnation of herself, and believe by many of Maertai’s family and friends that the sudden change of her behavior and memory loss is resulted of her head injury, Zhang Xiao awares that there will be a dangerous power struggle known to history between the scheming princes for the throne, which will results Aisin-Gioro Yinzhen to succeed as the Yongzheng Emperor after his father’s death. Zhang Xiao tries to change the future outcomes for the better, hoping to prevents any casualty as written in the future without interfering a man’s destiny, while trying to find a way to return to her time period. However, Zhang ultimately realizes that, not only she fails to alter the course of the approaching events, but also, under a predestination paradox, she is fated to become an instigator of the tragedy she tries to prevent resulted by her actions in the past and the princess’ romantic affections towards her.
LINK: 
Pie is a sweet girl who moves into a new college dorm room where she finds out that her new roommate Kim, is a tomboy who looks and dress like a boy. As their friendship develops, Pie and Kim begin to wonder if the feeling they feel for one another is just an ordinary friendship or true love.
Like the boy who cried wolf, Xia Zhi Xing had lied one too many times. So when she did tell the truth, nobody believed her except for the most unlikely person, Zhong Tian Qi, a runaway young master of a jewelry empire. His belief in her inspired her to become a real jewelry designer instead of a lying, scheming jewelry con artist, but as misunderstandings pile up, their love turns into hate. Five years later, Zhong Tian Qi is a different person. What will happen when fate brings them together once again?
LINK:
SUM:
When I was searching, I found out there's a 2008 version called Royal Tramp and I read this plot- line is closer to the storyline. I also found and read a forum and quote, "Theres alot of hot girls" and instantly thought that got to be a guys saying.
http://www.mangafox.com/manga/keppeki_shounen_kanzen_soubi/
Zhang Xiao, a contemporary, ethnically Han Chinese young woman from the 21st century, accidentally travels back in time to the Qing Dynasty period during the reign of Kangxi Emperor after experiencing a deadly combination of traffic collision and electrocution, resulting her somehow reliving the life of one of her previous incarnations and forcing her to assumes the identity belongs to her past avatar: Maertai Rexi, teenage daughter of a Manchu nobleman, who also had a near-fatal incident in her own time which Zhang awakes from. 
Takuma, a boy who is told he will die before he?s 20, and Mayu, a girl who is in love with him?
IMDb SUM: 
