Hello! I think it was BL system novel where MC transmigrated but I only remember one arc. I think it was futuristic arc. MC woke up to abusing family and I think there were also different genders and MC was the weaker gender. So he called the protectors since his genders rights were taken very seriously and let them see how his family is abusing him. They took MC away and put him into a foster family. In that family there was only one person and was some kind of strongest richest marcial? (the rank was about military)( he was a lot older than MC) and maybe was somehow linked to the royal family. He turned out be MC lover. There was also part about gems how MC could find highest grade stuff and in the competition MC carved out jewelry for his lover. When MC made sure that he was his lover then started flirting with him. I'm not sure if I MTL it or it was translated EDIT: I found the novel. If someone is interested the novel is "Who Touched My Tail!" arc 13.