Responses
Read ch2 again then u will understand rourou is seme biological child in fact rourou is born by unknown paid foregin women with seme sperm at the time seme worried about his child's safety so he change uke sperm with his and made uke believe that rourou is his child and let uke raise him hope u understand my explainations... extra info the author won't include that foreign women character in my opnion cause it isn't necessary
I'm really curious who's the birth mother of rourou