soo basically giyu and sanemi are married and this an royal In this au, they were like hopelessly in love. Got married, and adopeted a kiddo that looks like them but sanemi's distant knoe and a douche. And he has a mistress before they were married sanemi would write so many love letters to giyu. So for their anniversary of however many years giyuu decided to write him back one since he usually never did that's what he is gonna give him, but sanemi... dosent really care, At some point giyu brings out all the old letters and starts burning them, that's when sanemi realized he rlly did fkc up.... (and anyone you want and you are giyu)