Maybe she passed out on the island and later when she woke up and searched for people, she found her father on…
Maybe because she was floating? Idk but i believe anything is possible in a kdrama. Also she and her dad fell at the same time, maybe the writer wanted to show her that her dad passed away? (Only finished ep1) so kiho had told her that "if u genuinely wish for something to come true, one or another, it will come true", my understanding is that she wanted her father to pass away so she witnessed that? Idk
Okay IF theres season 2 with love triangle, imma cry because it would be so sad if han junkyoung becomes second lead and im sure theres no way junho would pick a show with him being the 2nd lead so lets see what happens
But on the graveyard of JDJ, it looked like song joongki/YHW but idkk