With a few questions

Lucia set the table while you poured wine for everyone, and then you all sat down to eat. The conversation started fairly normally, all things considered. Rosa commented on how great the food was, and Lucia talked about the recipe and how much she practiced making the dish. However, it didn't take long before you started thinking about the true purpose of the night.

"Hey Lucia," You said, gesturing to your groin. "would you mind?"

"Sure thing, love!" Lucia said, crawling from her chair to beneath the table as Rosa watched on. Having settled on her knees in front of you, she undid your pants, pulled out your cock, and began kissing the head lovingly.

"Okay, so this is, like, crazy hot and all, but I just gotta know more!" Rosa said, shifting slightly in her seat. "Blowjobs during dinner and 'house rule number one'? I knew you two wanted to spice things up, but I definitely wasn't expecting..." Rosa trailed off, gesturing to the scene playing out in front of her.

"Ah, so Lucia didn't give you all of the details of our new arrangement, then!" You said, feeling your dick start to harden in response to Lucia's attention. "You see, your dear sister decided that she wants to prove her devotion to me by making herself submissive to me in every way. House rule number one is that she isn't allowed to wear any clothes while she's at home. We're still working out some details and settling into new routines, but so far she's followed through wonderfully!"

Rosa lightly bit her bottom lip, taking a moment to fully process what you just told her. "So, when Luce told me you wanted to invite me into your bed..."

"As I said, your sister has been following through wonderfully! Isn't that right, slut?"

"I live to serve, Master!" Lucia chimed in from beneath the table.

"So she'll just do anything you say without question?" Rosa asked, still in a little bit of disbelief.

"And anything you say if I command her to." You responded with a slight smirk. "Slut," you said firmly, "for the rest of tonight, you will obey Rosa's commands as if they were my own unless they go against any command I have given you."

"Yes, my love." Lucia said brightly as she continued to kiss and lick the head of your cock.

You looked expectantly at Rosa, waiting to see what her first order would be.