
when she starting crying while seeing her brother it made me tear up because it must have been hard to see ur own brother killed infront of you and when she met her brother and her brother was scared of the evil side that was showing how she scared of what her brother will think when she turn into the one thing he was trying to prevent but when he comfort her in a way by putting the flower crown on its his way of saying you will always be my sister no matter who you become and i will always be watching over you thats how i saw it

the people saying oh they are related or i cant see them as a couple only siblings like if you guys read the story you will see that they stated they arent blood related also im pretty sure the translators put in the first chapter that yus will the be the male lead and another thing is she didnt grew up with yus only the body her soul was put in spend time with yus if you guys wanna drop the story thats fine but the translator did put a note that yus was the male lead so it was bound to happen

add to that Yus never ever sew her has his sister from the first place, so it pointless to try and force a "sibilings" relations with him since he does not feel that way to her and will never ever will. and there is nothing wrong with that, he has the right to feel what he wants.
has for the FL since she is basically a stranger from another world I think it's fine for them to be together.
uh hopefully this doesn't ruin the relationship with her sister i'm praying the author doesn't go that route