Moriyama Miina is the main character, our shoujo heroine. She's a typical teenage girl - spunky, confident, and tough on the outside, unsure of herself on the inside - especially as regards her feelings for her childhood friend Amari. She's annoyed when he flirts with other girls and doesn't seem to notice the special things she does for him, and can't quite figure him out. She tries to hide her feelings, but they're rather obvious. It takes her a while to figure out exactly how she feels, though, instead of just reacting to her emotions.
	Amari is quiet, not as excited as Miina. He's not as obvious as Miina is about he feels, either - in fact, all he lets slip is that he's annoyed at her for being unladylike, clumsy, forgetful, in the way, etc, etc. He also doesn't seem to have a problem with talking to other girls, which doesn't exactly put him on Miina's good side. He studies very hard, and tries very hard at sports, even though he doesn't show it. Towards the end, his actions shine through over his words and show his character to be even better than Miina could have hoped for.
	Yayoi is Miina's blond, smiling friend. Secure in the fact that she has a boyfriend already, she oohs and aahs over the anonymous birthday gift of marmalade in Miina's locker. (Miina thought that it was Yayoi's gift at first, but this was incorrect.) Yayoi's gift to Miina was a cute stuffed teddy bear, obtained when she and her boyfriend visited Disneyland. She's the one who coins the term "prince" for the person who left the marmalade, and she enjoys speculating over who this prince could be.
	Tsukamoto is a handsome upperclassman; Miina calls him Tsukamoto-senpai. When it's discovered that he works at the Crescent cake store where the marmalade comes from, he becomes the prime suspect for Miina's "prince." However, he seems ignorant of the fact that it's her birthday at first. Also, he drops hints that he knows who bought the mysterious marmalade... but is called away before he can elaborate, leaving Miina with only tantalizing scraps of information. Tsukamoto admires Amari's drive to succeed, as well.