@EusaniaAinasue he neither got poisoned or fell asleep. The rich guy put some kind of drug in his tea, that in my country is popular called "Good night Cinderela". What the lore is showing us is: the two of them are brothers (but I think not from the same mom). They didn't notice that the black haired is the missing child yet because the belived it was a girl (I didnt understand why he dressed girl's clothes, if it was his mother asks or just because he likes it). One thing we know for sure: he was taken by the troupe when he was really young, so now he couldn't remeber of his past, just see some kind of flashbacks.