I hope someone answer

Can y'all tell me title of this manga that I once read before but I can't remember it now, the mc is a prince who has 2 big brothers that obviously likes him, but the mc only like his knight, and oh the mc is a prince I think? he got his own kingdom cuz he humiliated by having a sex with his father's uhmm... friend?? (this is the only thing I can remember) and then like the mc has a past life were he fell in love with uhm I don't know what to call them but like in his history they use guillotine but like the ml is the one who's chopping the head and like the mc is the prince and he wants the ml attention, so he always have execution so he can see him but the ml doesn't look at him so he then made himself a prisoner, and was sentence to death and the day that his head is getting chopped off, he finally got his attention (that's all :>)