Niceart= 2, 14, 15, 23, 24, 40 and 42 please?
2- How’s their team work? Do they share well?
Yes and yes. Hell, its canon that they tend to ditch their actual work partners to go off alone to do jobs in both ep03, ep04 and ep07 (on nice’s part)
14- Anything they both dread?
The few people they care about dying
15- How adventurous are they?
Nice is the more adventurous of the two. Art is more cautious but if he feels they arent in danger he might go along in an adventure.
23— How do they hug? Kiss? Tease? Flirt? Comfort?
Nice is more of a teaser, while Art likes to flirt. Thanks to their fucked up childhood they arent very used to hugs and Nice sucks at comforting though he does try to by awkwardly patting Art’s back and blabbing nervously. It isnt too comforting but Art gets the intent and is touched. Art is better at comforting, but Nice rarely ever needs or shows that he needs it. As for kissing, Nice sucks at first but quickly improves. He generally likes to go for the ‘steamier’ kinda, while Art likes to give more chaste kisses first.
24- Any doubts about the relationship?
Art sometimes still has pangs of worry about being good enough for such a genius. As for nice, its very rare but once or twice he worries if he isnt too childish for someone so mature and hardworking like Art.
40- Any special memories? Do they have a special place they like to go to?
Apart from the obvious “the time we admitted out feelings” special memory they probably hold very dear the time they were with Art’s brother. Special place would be the grave and Hamatora Cafe.
42- Do they let each other get away with things that would normally bother them?
Yes. Also has proof in canon
19- What do they fight about? What are their arguments like? How do they make up?
From what i saw of their interaction before Moral fucked with Art's head, I'd say they rarely actually fight. Art was pretty indulgent of Nice and even when he seemed not amused by his silinnes in episode 04, he still didnt confront Nice about it. So I'm guessing they'd rarely ever do it. i'm guessing if they did...mostly it'd be silly fights due to Art not being amused by nice's slopinnes, or Nice getting impatient that his boyfriend was too busy with work to give him much attention. These sorts of arguments end with the non complaining person thinking the other is overreacting for complaing about it, which only agravates the other more. In the end, they make up easily, with one going to apologize for making such a fuss and/or the other beign sorry for not taking their issues more seriously.
A more serious fight though...it might involve their jobs or, more specifically, their sense of morality? Maybe Art has to lock up or set free someone and Nice really doesnt like it and they have a row over how much power the police has. Or maybe Nice does something -or fails to do something- Art sees as wrong and they fight over that. Them making up would either be when they decide they cant agree on this but love each othe rtoo much to remain fighting for long, and accept this difference OR they decide to compromise somehow. Or they just make up through sex ;)