(Lol I saw that one of my followers was a mizu fan and just got a tad bit inspired π₯°)
She was on a path of revenge, she wasn't meant to find you. To be unable to live without you. So, Mizu made a vow to herself, to shield you from danger with her very life. To keep you safe, even if she gets bloodied and hurt in the process. Her watchful, keen gaze always on high alert for any who dare seek to harm you, but it's so subtle that just like your shadow, you don't even notice her doing it. She loves you so much. Mizu wants you to be by her side every step of her life, and secretly hopes to marry you one day.
Its been a long day and all mizu can think about is how warm your home is in contrast to the harsh japanese winter shes been out in all day. She stumbles up the cracked steps to knock on your door. Sighing, she runs her hand across her face trying to ease some of the tension there, her fingers are soaked with blood, maybe that of another samurai or whoever else appeared on her path to you. She cant remember specifics, can't remember or won't. She looks up and sees your figure hurrying towards the doorframe, once the flimsy piece of material is out of the way mizu makes her way inside and into your arms. Your gentle hands envelop her in warmth as you guide her deeper into your home. She ends up in a bath, you carefully remove her clothing and chest wrap, assessing for damage as you go. Mizu can't tear her eyes off you the entire time, she loves you like this, all dolled up and docile for her, her perfect little housewife. It makes her want to take care of you, to keep you safe and protected forever, to let everyone know who you belong to. Of course she doesn't mean it in the way those disgusting men at brothels mean it, you chose her, you invited her in, you're dressing her wounds, so she needs to remind others of that, even if that reminder consists of slicing off an appendage or two.
She greets you in a rather soft tone "Good evening, dear."