I liked the first episode. Not going to sugarcoat it but I didn't realise that Ha Yi Chan (the ice cream shop guy) was the father 20 years ago. The editors could've put a text to clarify it.
After reading a couple of comments I realised what's actually going on. The ML doesn't have a loveline yet. He is just here to help his father (Ha Yi Chan) fall in love with his mother (Yoon Cheong Ah) who was already in love with the father because the father was in love with someone else (Choi Se Kyeong).
The ML (Ha Eun Gyeol) is in the present. The show didn't clarify it.
After reading a couple of comments I realised what's actually going on. The ML doesn't have a loveline yet. He is just here to help his father (Ha Yi Chan) fall in love with his mother (Yoon Cheong Ah) who was already in love with the father because the father was in love with someone else (Choi Se Kyeong).