With the exception of the last episode, this drama was stellar. The concept was unique and fascinating, the chemistry between the boys was on fire, and the undercurrent of darkness and danger was incredibly compelling. The cinematography and visual representation of the color rush was gorgeous, and the music was well-suited to the moods of the respective scenes. The tension got my heartrate up multiple times! Unfortunately, though I did like the ending, much of what made the drama so good was abandoned at the last moment. The hints of manipulation and possessiveness from the boys disappeared, and there's no follow-up on the mother's disappearance. I can't find anything on a planned season 2, but apparently there's a web novel so there's a potential for more. I would still wholeheartedly recommend this, as you can see by my high review, I just think it could've had a punchier finish that better matched the tone of the overall story. I'd love to see more in this universe, there's plenty of potential.