Lip's Vibration

Gyokudo Yamamura-he is a famous sculptor. He has 3 daughters. 2 of his daughters have left home. He makes over his youngest daughter-Asa. One day He was killed in a accident. 2 of his daughters-Maki and Sae have a quarrel over an inheritance. And the concerned was killed by someone. Who is the culprit? What is Yamamura family's dark history?