3, 17 and 20 for Xanxus/Dino?
3. Who walks around the house half-naked and who yells at them to put on some clothes?
Xanxus is definitely the one who walks around half-naked, Dino is too busy ogling to even see the other people around them (he needs all his concentration for navigating and ogling at the same time, honestly. His aim isn’t even preventing himself from tripping, it’s not breaking bones- a more realistic goal). The one who yells at Xanxus to put on some clothes is, predictably, Squalo, who would very much like to eat his breakfast without his boss showcasing for the boyfriend.
17: Who keeps getting threatened by the other’s overprotective older sibling?
If we’re gonna go ‘’everybody lives’’ - Enrico did so once just because he wanted to know what it felt like because it was a Big Point in fanfiction and he just had to try it out.
Frederico is really too sensible for it (read: he saw it as Cute Little Brother Number 2: This One Screams Less), Massimo gave a shovel talk with such glee that not even Dino could take him seriously.
Tsuna is no older sibling and neither is Bianchi, but they gave Xanxus the shovel talk of his life and still squint at him every time he does anything more than holding Dino’s hand.
20: Which one types with perfect grammar and which one types using numbers as letters?
Dino has ATROCIOUS text etiquette- to the point where many people ask themselves what he’s actually trying to say.
…Xanxus is slightly OCD about grammar, but also can’t be bothered to text a long message, so mostly he just calls. There was this one time he pretended to be possessed by texting Dino in a Dino-esque way to mess with him, and knowing how scarily insistent Xanxus is on grammar, Dino believed him.
He came home with the local exorcist on speed dial, only to see Xanxus laughing his ass off. Let’s just say it was an incident nobody ever spoke off again and that Xanxus slept on the couch for a week.