From Shoujo Manga Maniac:
One upon a time ... A pretty princess has just been born in the kingdom of Party Land. The three fairies are invited to her baptism. When they are filling her benefits, the malicious witch excluded from the festival launches a curse against the poor child... The day of her fifteenth birthday, the princess Rubis crunches in a poisoned apple and is captived in a quite particular jewel: the Sweety Gem. In 1998, Yan, a young model, finds the jewel and embraces it by accident ... The princess is released from her long sleep...

From Tokyopop:
Remember the story of the Frog Prince? A little girl kisses a frog to get back her ball, and ends up with a frog for a husband! Only after she’s completely ignored and abused him does she realize the frog has changed into a handsome prince! Miyoul is a feisty high schooler whose only thoughts are of the hottest boy in school, Guelin. But her childhood friend, Heerack, who acts as her personal lackey, is deeply in love with her. Will Miyoul be able to see which is the frog and which is her true prince?

Because of a sin she committed in her past life, Princess Bell was born as a golden bell. In order get back her human appearance, she must find Prince Mu Kyul and tie their strings of fate back together. Will the reincarnated lovers be able to meet again?
(Source: Esthétique)

Ee-Ji is a high school freshman with one best friend, three older brothers... and absolutely no interest in boys. That is, until she notices one of her classmates, Han-Kyul, for the first time, and figures out she knew him from school when they were kids. Now that she thinks about it, she liked him before and she starts to realize she likes him now. She finds it hard to deal with her feelings, especially when another classmate, Sae-Run, is always bugging her. Ee-Ji can't seem to figure out how to express herself, being so shy, sweet, and sensitive.
(Source: ANN)