How they feel about hugs or physical contact:

Tsubasa:
SHE. LOVES. HUGS.
Like seriously, she'll tackle you out of nowhere, or cling onto you for no reason.
She just likes being near her friends.
Also, if you happen to be her boyfriend, girlfriend or whatever, prepare to get hugs and cuddles from her a lot.

Daichi:
He's touch starved, so if you're in a relationship with him and you're big on physical contact, things will be very slow.
But if you really need some sort of comfort, he might hug you or something.
Not for very long.

Hanabi:
You have to let her know if you're gonna give her a back hug, or else you're gonna get slapped or kicked where the sun don't shine.
Hugs from the front are okay.
She's pretty short so she's probably gonna end up having her face buried in your chest.

Miyuki:
She's not really used to hugs or anything, so she'll probably melt and turn into a blushy mess if you hug her or something.
But that doesn't mean she doesn't like physical contact.

Kayla:
Touch her and she'll slap you.

Hime:
She will probably tackle hug someone or just hug them outright.
Yeah, she likes hugs.
Pretty much.