the drama started off as really strong .. actually throughout the drama the only question I had was why was this not blowing up ? and how did the writer even manage to write such twisting plots ...the idea was new and thrilling ..the uploaded ...at the very beginning I didn't like the Character of tae sul much but as the story unfolded he became a really good hero ..a rather realistic I would say ...and SEO heo character was also interesting ..a tough girl who protect the main lead unlike many kdramas....I especially loved the second male lead ..he was handsome...now let's come to the point ..the ending ? ..the last two episodes were unleasing new plots and revealing a long plan but .....what was the ending ? why did the writer made the ending sooo Soo vague ? after spending an entire 16 hours on those episodes ..the extreme plots and planning of characters ..han tae sul killed himself cause he saw that as the only solution ? ...it made the efforts of the characters and the purpose of the drama nothing ..it felt like my time was wasted ..and then I thought oh atleast sigma got some care and he changed but na uh ...he was same evil character ...so what was the point of the drama ? the efforts ...everything went to waste ..I just hated the ending ...they gave han tae sul and SEO hee .a happy ending ..made the last episode even confusing ..how did han tae sul survive ...how was he alive ? how was SEO hee with him ? ..what about time paradox...why didn't she disappear ? ..like what exactly was happening