Complex (Kikuchi Kumiko) 1-7

Rin is a tomboyish 14-year-old who lived with her grandpa in a small village out in the countryside. After her grandpa's death, Rin is obligated to leave her village to live with her mother in Tokyo. When she arrives, she discovers an amazing secret: her mother is not an office lady, but a famous model, Myu Suzuki!
After one night of reunion, Rin's mother leaves to follow some guy to an unknown foreign country without any notice other than a letter. Without any money to survive on, and the contract between Myu and the model company, what is Rin to do?