What did the protagonist pick up and where did he pick it up?

There was a novel where the female protagonist picked up a bottle of star-shaped sand on the beach.
At first, the female protagonist (rich girl) liked the male protagonist and transferred to his college, but the male protagonist did not like him. The male protagonist told the public that he had a girlfriend, but the female protagonist did not believe it. The female protagonist went to the infirmary again for some reason. Then, the male protagonist fell asleep beside her, and then, for some reason, the male protagonist left through the window. Then, the female protagonist took a bottle of star-shaped sand and spent the entire summer picking it up to tan herself...
I read it in 2012, but I can't remember its name. Please help me.

Answer 1

I recommend Super Vitality! The Miracle Princess of the Other World is for you. Although it was a little different from the female protagonist picking up star-shaped sand on the beach, the female protagonist in the novel also picked up a magical bottle under unexpected circumstances and started an adventure in the other world. This is a healing, sexy, hot-blooded, and touching fantasy sword and magic novel. I believe you will like it. I hope you like this fairy's recommendation. Muah ~😗