The Last Straw

my seventeenth summer, three months before i went into isolation. the first daughter of marquis renarty, the girl who was called my “sister” had returned. everyone in the mansion loved only her, but i didn’t care. however… sometimes, the self-proclaimed lesser spirit i occasionally meet tells unexpected stories, and the woman called my “sister” tries to protect me, while the duke i contracted with in a mutual agreement claims to be at a loss. and it seems that my affectionate childhood friend and i no longer have a simple friendship.