What about the blue haired childhood friend
Oh is he blue haired? HAHA I thought he was white haired. No idea why my memory was like that. Yeah he's the one Hari was supposed to get married into in the past life so if he was the one Hari ends up with it can either have a longer storyline in order to build the relationship between him and Hari or it can be that Eugene forces an arrange marriage with the guy and Hari to create stronger alliances (which directs to the original flow of the events as the one that happened in Hari's past life), but I doubt this can happen. But we'll really never know haha. It's plausible.
I'm thinking of different paths for Hari on this story.
1.) Eugene as someone Hari ends up with. If this happens, it's a predictable enough ending as we can see how the author builds up attachment to both Eugene and Hari. It can be a happy ending (still, even when I know Hari is an "adopted" sibling, it weirds me out but not grossly enough to make me drop this manwha but that's beside my point)
2. IF Hari ends up with the Prince, there can be a great rift that can happen between Hari and Eugene (given that Eugene's feeling is an independent variable in this scenario). The author needs to build up the character of the Prince creating more conflict between Hari and the fiancee of Eugene and all the drama.
3. IF Hari ends up with the white haired dude she was set up with in her previous life ( I forgot his name), the author also needs to build him up resulting in more chapters for this manwha, longer storyline OR it can be that Hari is forced to marry the guy by Eugene and Hari ends up sad (but I doubt this will happen.)
4. this last proposition can be a headcanon, what if, Hari ends up with the Second brother? (Scarlet Heart: Ryeo storyline and plot) ANDDDD this is going to happen when something tragic happens to eugene and you know build up of feelings and complicated shit.
So i dunno. Thinking these things really makes me curious what will happen next. I vote for the less predictable twists.