Responses
That's what I also concluded. Due to previous spoiler comments weeks ago, I peeked at the raws before translated version was posted and he definitely was going towards step sis first. Even though he changed his mind after Hari blacked out, it's an obvious conclusion I know I would come to if I were in her place...seeing him glance in my direction, but swimming in another.
Heres my theory, i think the guy did try to save his step sister first thats why FL saw his back when she drowned but Ml changed his mind and went back to her