Fred and George
Waking up the day after the Weasley's and Granger visiting, Harry decided to invite the twins over seeing as they would most likely want to finally get to know Severus as Harry's husband and submissive.
After making breakfast with Kreature, Harry sat at the table with Severus on his lap so Harry could feed both of them. Making small talk until they finished the plate and moved to the library to read for a while, Harry brought up inviting the twins and their partners over,
"Severus, would you mind if I invite the Weasley twins and their partners over?"
"It is your home, Harry, as long as the twins do not mess with any of my potions or other belongings then I will not have any issues with them."
"Alright, I'll invite them over for dinner in a couple days."
"That is fine with me, Harry."
In the few days before the twins coming over for dinner, Harry, Severus and Lucius went over how Harry could best use his seats in a neutral way to remove some weird laws, such as one about how Wixen under the age of 16 must always be tracked by the ministry and Headmaster of their chosen school.
The Twins arrived with a bang, very literally, as they set off party poppers with colourful confetti and sparkles as soon as they stepped out of the Floo,
"Harrikins!"
"How's the bed going!"
"Must be making lots of use of it"
"Especially with the growth spurt!"
"Don't forget about our wonderful gifts, Fred!"
The twins said with a wink. Harry chuckled at their entrance before wrapping an arm around Severus' waist, drawing their attention to the smaller male.
"We haven't yet used your gifts, but they will definitely come into play at some point."
"What gifts are they talking about, Harry?"
"Just some things for in the bedroom"
The Floo flared to life again as Neville and Draco stepped through and wrapped their arms around a twin each,
"Sorry we took a bit longer, Harry, Draco was having trouble with his hair,"
"I was not, my hair is always perfect, thank you Neville!"
The twins smiled at that,
"Especially when we've fucked!" They said together. Draco just rolled his eyes at their comment, used to their behaviour. Severus on the other hand was looking shocked at how the twins would just say something like that, luckily he was saved from the twins continuing their comments by Kreature popping in and announcing dinner.
After their dinner and some drinks, Severus and Harry said goodbye and went to bed to relax and cuddle before sleeping.