For the shipping thing... would you be willing to do Ukitake and Shunsui?
Gives nose/forehead kisses: Jyuushirou. He is really into physical demonstrations of affection. Shunsui would be lying if he said he didn’t like it.
Gets jealous the most: Neither of them. They know each other inside and out, and they are very sure that, if either of them wanted to be with someone else, they would be with someone else.
Picks the other up from the bar when they’re too drunk to drive: Sentarou and Kiyone pick them both up, because Jyuushirou is usually asleep after one drink, and Shunsui just keeps drinking until he’s asleep too. Not even Sentarou and Kiyone’s arguing can wake them up.
Takes care of on sick days: Shunsui. He already has a routine for Jyuushirou’s very frequent sick days: he’ll brew some of his favorite tea, cover him with that fluffy blanket he likes the most, and just sit beside him calmly talking about his day till Jyuushirou falls asleep.
Drags the other person out into the water on beach day: Neither of them. Shunsui doesn’t want Jyuushirou to get any sicker, so he keeps him company under the beach umbrella.
Gives unprompted massages: Jyuushirou. Sometimes, even though he looks somewhat relaxed, there’s a distant look in Shunsui’s eyes that suggests he’s thinking of troublesome things. Unprompted massages are Jyuushirou’s way of saying he’ll always be there.
Drives/rides shotgun: Kiyone and Sentarou fight to decide who’ll drive the old timers around. Neither of them knows how to drive.
Brings the other lunch at work: Shunsui. He usually has to buy stuff at restaurants, but he likes to make sure Jyuushirou is taking a break every now and then.
Has the better parental relationship: Jyuushirou. I have a headcanon that Shunsui’s relationship with his parents is a little complicated.
Tries to start role-playing in bed: Surprisingly, Jyuushirou. After Shunsui gets over the initial shock, he finds the whole thing very hot.
Embarrassingly drunk dancer: Neither of them. They’re more the kind to fall asleep when drunk.
Still cries watching Titanic: Jyuushirou. He’s not even slightly apologetic. Shunsui finds that cute.
Firmly believes in couples costumes: It’s hard to call it a firm belief, but they like to wear matching costumes every now and then. It’s amusing and it always seem to cause an uproar in the SWA.
Breaks the expensive gift rule during Christmas: Neither of them. They go for the simple things, like a bottle of Shunsui’s favorite sake, or a box of Jyuushirou’s favorite chocolate.
Makes the other eat breakfast: Shunsui, especially when Jyuushirou is in one of his sick days.
Remembers anniversaries: Neither of them. They don’t really care about specific dates.
Brings up having kids: Neither of them. Jyuushirou would love kids of his own, but both of them know that Jyuushirou’s illness is already hard enough to manage.
Thanks for the ask! <3 Hope you liked it!