[Chinese]OBA-204 A two-night, three-day study camp at Mr. Shinri's house. Shinagi Shinri, 50 years old.

Five years after her husband died, a widowed female teacher, Mari, who has too much sexual desire. Even though she was a teacher, she kept her reason by masturbating six days a week. One day, I decided to have a study camp at her home for 3 days in order not to repeat the grade of the 3 inferior students in her class. While studying seriously, Students are curious about the truth. And Mari, who has been under the gaze of a man for the first time in a long time, knows that she is naughty, but her frustrated body is set on fire.