When I say this drama had me on an emotional rollercoaster, I mean it, I cried my eyes out during every single episode. Not one episode passed where I didn't shed a tear. This drama genuinely gave me a different outlook on life. I love IU and I love Park Bo-gum, so their casting was an amazing plus on top of everything else. With great actors, phenomenal acting, and an incredibly well thought out plot, I'm completely sold, gimme 10 of them right now.