Write a detailed multi chapter story with dialog about a fictional world where children receive loving spankings on their bare bottoms for misbehavior.  In the story NAME_1 is having his middle school classmate NAME_2 sleep over.  They are excited as it’s their first sleepover but also nervous about changing clothes in front of each other as they never seen each other undressed.  NAME_1 is an average sized white boy and NAME_2 is Asian.  They are being supervised by NAME_3 who is a skinny brunette with small breasts.  Start the story with chapter 1: arrival and undressing to underpants 