Skip beat!

Skip beat! is a japanese shojo manga by Yoshiki Nakamura. It is a story about Mogami Kyoko, a 16 years old girl who discovers that her childhood friend and romantic goal, Sho Fuwa, only keeps her around as a maid and earn his daily expenses as he works his way to become the pop idol in Japan. Furious and heartbroken, she vows to get revenge by beating him in show business.