A mother who lost her pride after being fucked by her son's classmate

Junrei (Kurokawa Sumire)'s son, Shinya, has no particular rebellious appearance, and is well-studied and growing healthy. Junrei hoped that Shinya would continue to grow up without stepping down the path. One day, Shinya's classmate Kojima came to visit his house. Kojima, who had longed for Junrei, happens to grasp Junrei's secret. Junrei is blackmailed and her body is played with as she is told...