Arafou Riman no Cinderella Tensei

A middle-aged salaryman who had been leading a dull life is reborn as a beautiful idol girl? "With this I'll be able to live an easy life that will be envied by others!", or so he thought, but in addition to the generation gap, he faces the harsh reality of being at the bottom of the barrel in an idol group aiming for stardom. Is there really happiness to be found in the life of an idol who is actually a middle-aged man on the inside?