Yeah, but details first

"All right." Byleth said as he started getting dressed. "But there needs to be a few ground rules first." He gestured a finger at Sothis, who just tilted her head with a big grin on her face. "Sounds good, Master! what's the first one?"

"First, they have to be consenting to the idea. If they say know, we make them forget or rewind time or whatever so they don't know too much." He stated, Sothis nodding, paying rapt attention. "Second, I'd like to get a chance to know them a bit better before we extend any offer. Third, I'd like to start with Manuela. She may be a lot, but I got the impression she's really lonely." He raised his hand to show three fingers and started counting them off. "I think I'm forgetting something."

It took him a minute to remember the other issues he'd wanted to cover. "Right. Fourth, while I would like the idea of having a harem being okay, I'd like to keep it secret for now. Other than the relationship issues, I don't want to affect the politics of Fodlan doing this." He'd heard stories about what some nobles had done before, and wasn't interested in adding harem rules into politics for someone to ****.

"And you don't want to encourage the playboys here." Sothis nodded, holding up four fingers of her own, She chose not to bring up how hot the idea of secret affairs could be. "Anything else? Like say, preference on members or rules they have to follow?"

Byleth stopped, needing to think for a minute. "All right. Fifth, I think I enjoy being the one on top. Also, straight, so just girls for me. But, if they want to date a guy outside of that, I'm not against it. Does that make sense?"

"Absolutely, Master. I can do all of that, but did you want to add any details to this to make it clearer, or leave it up to my discretion?"

Byleth paused, considering what she just said. He could add more details, or he could let her interpret things on her own to make things more interesting down the line...