Idol Hakkenden: Minami no Shima no Taiyou to Hoshi

A wealthy and ill tycoon is nearing the end of her life and must choose an heir from among her three granddaughters. To determine the most deserving, she sets a three-month trial, during which the one who pleases her most will inherit her fortune. The eldest granddaughter, a business owner, and the second eldest, a scientific prodigy, believe they are the strongest contenders. The youngest, however, has a different strategy: she intends to become a top idol and requires the assistance of seven others to achieve her goal.