What are your leads' ways of showing love and affection?
Damsel in the Red Dress
The ways Kattar has shown love and affection up to this point has always been by caring for Alicia. He would drive her places, take her to art galleries she wanted to visit though he has very little interest in art himself. Watch the sort of movies she was into, though again, they rather bored him. And he came to bring her food and clean up her house for her when she was really depressed.
Similarly, Alicia is the sort of person to help out whatever person she loves as much as she can. Since Kattar is now paralyzed, this often means helping him get things from around the house, or washing his dishes for him. But she's also a very cuddly physically affectionate person. Both of them would willingly listen to each other talking out their feelings, but Alicia's go-to is also to give the person a hug.
Kattar likes xs and os, but he's currently not super comfortable with physical affection as he received so little his entire life.
Hushabye Prince
I legitimately just got through talking about this with my partner the artist of this series:
Jinwoo would be the type of person to give Eskimo kisses (just nuzzling in general really). Hug his sweetheart from behind and put his chin on her head because he's way too tall. To relax with his head resting on her heart or resting on her lap, and also to want to slow dance, because Cinderella. But he'd also slightly more unusual or less common things like sticking both his hands (gently) into Kimberly's hair or smoothing/playing with her hair. Insisting on picking her up and carrying her princess style even if she didn't need or ask to be carried. And totally wanting to dress her up as a princess or paint on her face lol.
Kimberly is a very touchy-hugging-and-kissing type person. Which could easily be too much for Jinwoo who takes a pretty long time to be willing to touch anyone or let anyone touch him, but they could get there eventually if she didn't scare him off.