I don’t think he is in the harem, per se. I think he just ends up actually caring for her as a brother and they end up getting along, once he deems her not a threat the throne. At least I hope, lol
We aready met the 3 male leads of the original novel, now, we're just missing the crown prince, assasin guild leader, and the potential male lead of our MC which is the villain daniel (or was it damien? The one named with letter D as initial ). So, i don't think the prince is included as the owner of a hand in the cover since, he's most likely the ultimate villain after MC's transmigration.
the assassin guard leader s Daniel and he's the ML
The assasin guild leader is the ML, Daniel. And I've read a couple of spoilers and the crown prince will come to be protective over her cuz she helped him to be a better man and not too obsessive with Ariel (the OG protagonist). They'll ended up as good siblings duo.
And the ultimate villain has already been mentioned by name. Dante Vance, the maternal uncle of Litia.
Actually I've seen a few spoilers because this is a different languages and some languages have more chapters for what I've seen he still in love with the lollipop girl so I don't think he's a love interest character
I was rereading this and maybe most of you have already noticed but the cover has five hands around her and if you look closely the one puting the crown on her head is the fucking prince which means he is in the harem and FUCK