
Exactly! There a difference between romantic feelings and platonic feelings.
They have a platonic sibling relationship. It’s not weird or incest if siblings are close.
People think all siblings don’t get along and can’t stand each other. Which isn’t true 50% of time.
We can’t even read a story about a obsessed siscon brother who cares about his sister in a non romantic way without someone claiming it’s incest.
People really be over analyzing this story.

Yes lol no one supports him but Cayena is the first person who shows him affection and ofc he wants more of that affectionᵃⁱⁿᵗ ʳᵒᵐᵃⁿᵗⁱᶜ ᵒⁿᵉ it leads him to be possessive or obsessed but yeah he's not inlove with her its just the first for him. Actually I kinda feel bad for Rezef because he's not really that villainous person its just that the people around him like influenced or threaten him that he will be forgotten if he doesn't prove himself so in order to achieve being an emperor he's willing to make other people his puppet just to prove his worth, but still theres no incest tag so shipping 'em might be uncomfortable for others (•ᴗ•)و

It was easy to see that it's a strong brotherly love for his sister that is unfolding from her changes to the story. Clearly they've never read the sis/bro con types. Those are some scary character types with how protective they are, but it makes them the best ally and trusted person to get on your side.
I just want to see how much he changes from the original line with her attention towards him. That light she caste upon his dark world is worth watching ^^ I love when siblings who were set in a negative way become the most bonded as they mend.
It's so hard to find a treasure where they aren't forced into incest ヽ(`Д´)ノ So I'm enjoying this pure sibling love that is as it should be just platonic! Those people just can't let a good relationship go till they ruin it. ┑( ̄Д  ̄)┍
This is not incest, some of the other readers think it's incest and keeps on shipping the prince with his sister. Come on guys, there are different types of love and the romantically love is not applicable to those two. Yes the prince is obsessive with her but he's not inlove for goodness sake, it's just the princess is there when he was having a hard time during his childhood but it doesn't mean he's inlove with her romantically ( ̄へ ̄)