Responses
The one scene I remember is that the mother caught them on the act, the father went away but the son confronts the mother and said "I'll love him(father) better than you ever will!" and then the mother slaps her son. And then the mother yells that their relationship is forbidden and that he is his father.
Does anyone know this yaoi/bl/shounen ai manga/manhwa/manhua(idk which one) where it's an incest of the father and son, they might be blood-related or not (stepfather and stepson)? I also might be confusing the role as a married man and a random boy or the daughter caught his boyfriend or husband fucks her father..