"Hi, my official sister-in-law!"

I blinked in surprise when Rian came in and ran towards me. She pulled me in a tight hug before throwing herself on the couch in front of my desk.

"Official sister-in-law? Really, Rian?"

"Why? What's wrong with that? You're my official sister-in-law now, aren't you?"

"W-What are you talking about?"

"Well, it's because you're now my brother's wife, as in real wife and not just based on a contract, a deal or an ...