From Ivyscan:

Sari, who likes nail-painting, hasn't thought much about her future. One day, she meets her classmate in the library. He praises her nails and that gives her an idea about her future. They start to get closer, but then something happens...

From Sugar-Oasis:

Luna works for her uncle's talent agency, Nekosawa Productions. She has a special talent: she can see the individuals who will become famous. Unfortunately, the last two she found left Nekosawa Productions for bigger and better known agencies. To save her uncle's business, Luna sets out to find the next big thing.