Kakashi, because he knows that Obito would blush almost everytime bc he's such a tsundere
How do they wake up next to each other?
Wait, they sleep? They're both insomniac
lol jokes apart, I think Kakashi moves a lot while he sleeps, whereas Obito barely moves, when he sleeps he doesn't really wake up easily
What they do when both are having a bad day?
Watch a bad movie, most of the time a cliche teen movie, to turn off all their braincells
Who do jokes most of the time?
Kakashi, most of them being bad jokes, and Obito be just "you didn't say that", but inside he's laughing his ass off
What somethings do they do for one another because they know their partner hates it?
Obito hates ordering food as it takes more social energy for him than he has, so Kakashi does it for him (although he doesn't have as much energy either).
Despite that, they don't order food very often, it's usually Obito who cooks something for them, as Kakashi doesn't know how to prepare a wide variety of dishes.
How do they show affection to each other?
They both think an action is worth a thousand words, but deep down Obito loves to hear Kakashi say he loves him or something like that
Who sleeps on the couch after a fight?
Kakashi, Obito kicks him out of bed
Who brings a animal they found home?
Kakashi, especially dogs, but cats too, because he knows Obito is a cat person
Obito, because he has a certain disgust for insects, and he knows that Kakashi doesn't mind them, so he's the one with the job of killing them
Who asks to weird questions at random in the middle of the night?
Despite both didn't sleep that much, Kakashi spends the night reading Icha Icha, while Obito overthinking about literally everything
Who wants to stay in bed just a bit longer?
Obito, regardless of what time he sleeps, always wakes up early in the morning, at the same time every day, so he calls Kakashi, who always asks for "5 more minutes", and when Obito lets him, he stays much longer than 5 minutes at the bed...
Who always make breakfast for other each morning?
Obito, he has the disposition for this, oddly enough
What do their family think of the relationship?
Counting that Naruto, Sasuke and Sakura are like family to Kakashi, they would be a little surprised by the news, as their sensei is not one to show his emotions.
Obito technically doesn't have a family, but if you count Madara as a father figure for Obito, he would constantly want to make sure if Kakashi is "good enough" for Obito, especially since he has a sharingan even though he's not a blood Uchiha
Would they like to have children?
I think they would both want to, but they would also think they wouldn't be good parents
Favorite (non-sexual) activity to do together?
Watch movies, series, animes (I don't Know why but I think both would like anime), play cards, something to do in home
Obito, but he would want to make everything extremely perfect and would spend days planning the proposal However, on the day, things would not go his way and he would be very frustrated about it. Kakashi would be touched by Obito's efforts, so he would take off his mask and give the Uchiha a kiss, saying he accepts the proposal