Searching for a historical bl

i read this manga a while back and i can remeber what its name was. But the story starts with a young boy with blonde hair who loses his entire family and then gets kidnapped by one of his relatives. he then faces horrible sexual abuse and the family member says something about how he should be grateful he waited until he came of age. Then later the ml which is the mc's old family friend who is older breaks in trying to find something. The mc also rescues these kids who are in a jail cell and gets called an angel because he has long golden blonde hair. He then gets rescued by his family friend but since he was traumatized and kidnapped at a young age his mind didn't grow so he acts like a child. Theres also this one scene where the mc is like sitting on the ml lap and he kisses him saying that's what his uncle taught him to do and the ml says he doesn't need to do that anymore. The important part is the side couple which consist of the ml assistant who is also around the mc age Ish and has long black hair he wears in a ponytail. He was an orphan I believe and is blind in one eye. His love interest is an exiled foreign prince who is under targets of assassination and the group's goal is to have him put on the throne. He is very promiscuous and sleeps with people every night despite being in love with the side mc. but he thinks the side mc is in live with the ml and that's why he doesn't go for him but he still teases him relentlessly. oh and I'm pretty sure it was in black and white. of anyone could find it for me that would be a great help