You need to watch it if you havent. Weak hero class 1 is my personal favorite kdrama of all time, I keep rewatching. Park jihoon was the perfect fit for the role of Sieun. Sien in such a complex and facinating character, and the plot as a whole is so interesting. This drama is action filled and really keeps you on the edge of your seat. It really takes you on a rollercoaster of emotions; this shit had me crying, laughing, and the ending of season 1 really makes you angry, in the sense that you just want more. Crazy cliffhanger. I am so excited for season 2, although I was really hoping Suho was going to be in it.