Chosen

Arabelle Kumi is the newest roommate at Shigure Sohma's house. She's also Arisa Uotani's second cousin. See the thing is her dad and stepmom are remodelling their condo and spending the next foreseeable months in France, not inviting their daughter to tag along. Things start off rocky with her and the Sohma boys and it takes a bit of drama for things to get settled....and the hardest person to get along with is the school's prince: Yuki.

This isn't going to follow the main storyline of the anime, but Tohru is part of the tale.