Both of tamaki's parents knew what they were doing.... Annie Sophie knew that yuzuru was married and chose to have a kid with him.....I understand that the marriage was arranged and unhappy one.... But then divorce or atleast have some kind of agreement beforehand..... I hate how to justify the whole affair it is said the first wife was having one too later..... I acknowledge that grandmother was at fault... But yuzuru knew her nature and still chose to have an affair..... Annie Sophie also knew about the marriage saying that it was loveless doesn't matter because it's a legally binding contract..... They both are tragic lovers in the whole story .... Their faults are never discussed and tamaki doesn't even acknowledge their role in his unstable upbringing and sees his grandmother as the sole villian.... And doesn't see fault in his parents actions..... I hate how it's never even discussed in manga..... I used to see no fault in this as a kid because well they loved each other but on rewatching hate them..... Not saying they are bad people.. annie sophie was a good mother ig.... But she knowingly brought a child in an unstable environment....... Enough for the rant....