Desperate

I'm searching for a manga, i don't remember if it's a yaoi manga or not..
Mc is the only black-haired in the family and said to be a demon child so he's hated by his mother (and his brother too i think, and i remember his brother likes him in the end bcs he found out that the mc has a breast)
But one day he met a brown-haired or (blonde-haired?) boy and the mc likes the boy (not sure if it's in sexual way or not)
But it turns out that the mc has upper body of a female and lower body of a male, kind of a hermphrodite.
The genre is a bit of historical, but tbh i'm not that sure either.
And yeah i've searched for this manga for a week, and i'm getting frustrated bcs my lack of information
I hope anyone knows this manga.. Thank you :"