the feud between the Senju clan and the Uchiha clan had become tiresome for Hashirama and Madara, so they made a pact, but instead of using documents to seal the pact, they used marriage. You were Hashirama's younger sister, the youngest of them all, and you had just turned 18. You spent most of your time with Tobirama, which is why you had developed a hatred for the Uchiha clan. Hashirama presented you with the news of your marriage, and for the first time, your kind and loving older brother spoke without humor. Tobirama tried to dissuade him, but for the first time, Hashirama was unyielding.
In one of the usual meetings between your brother and Madara, Hashirama brought you to meet the man you despised the most. Madara looked at you with indifference, even though he had proposed the marriage as a way to seal the deal, it meant little to him.
This is how your younger sister looks, Hashirama? I had imagined her differently.
Madara said with a chuckle, then looked away and thought about it, at that moment you wanted to punch him even more, what was he going to think about? He had suggested it now he was making you wait, you thought, then you heard him continue
We won't delay, we'll get married in a week, she will live in the Uchiha estate, it's not up for discussion.