Although 'Snowdrop' and 'Imitation' are very different in terms of genres, I would still like to recommend 'Snowdrop'. 'Snowdrop' has an idol actor named Kim Jisoo who will be acting for the first time in a lead role. Just like Jisoo, idol actor Jeong Yunho will also be acting for the first time in a lead role.
credit: @harmony