How is each member of Prapai's family with Sky?
Orn, Prapai's Mother: She used to have actual nightmares about some pregnant girl turning up on her porch because of Prapai. She doesn't even know Sky's name before she's fallen in love with him. This is the boy who saved her sanity! She would throw Sky a parade if he'd let her. Orn will either buy stuff to pass along to Sky through Prapai, or kidnap Sky to take him out shopping.
Prapai's Father (whose name I'm not remembering): Same as Prapai's mother. Sky got his slut of a son to finally settle down and become a serious adult. Prapai's father also constantly tries to kidnap Sky, buying him expensive golf clubs and happily playing coach.
Plerng, Prapai's brother: He finds Sky utterly adorable. Sky is his new best friend, his brother. Plerng is instantly in love with Sky and offers to buy him sex toys.
Phan, Prapai's sister: She finds Sky's innocence so cute. She just likes that Prapai is happy, and loves Sky for making him happy. Honestly, as over the top as Prapai's family is, she is the NORMAL one.
Aphros, Prapai's Uncle: Sky is cute and serious. Aphros loves that he's a fan, and has fun remembering his old roles with the new nephew-in-law. He also loves watching Prapai spoil Sky. He loves that Prapai has made such a good choice in Sky, and seeing his nephew in love makes him so overwhelmingly fond of Sky just for that. He's also happy that Sky is normal in their family of weirdos, and as Aphros falls in love with Paint, he happily thinks of what good friends Paint and Sky will be (Paint is a little under a year older than Sky).
And you didn't ask, but just for the record-
Sky's Father to Prapai: Sky's dad knows something happened to his son in high school. He knows he was hurt- he just doesn't know what happened exactly. Sky thought his dad didn't know he was gay, but he always knew. When he meets Prapai, he doesn't care about anything other than seeing that Prapai loves his boy and will make him happy. That's literally all he needs to know. He asks Prapai to always take good care of his boy, and that's that. He's part of the family now. Sky's dad isn't over-the-top obsessed with Prapai the way Pai's family are for Sky, he just likes that his son is happy.