KSBJ-324 Set up by her fiance's father... Riho Matsumoto

A son introduces his fiancee, Riho, to his father. The father offers his son the money for the wedding ceremony and honeymoon if he lets him sleep with Riho, and the son agrees. After drinking the tea offered to him, Riho becomes sleepy and unknowingly gets played with by his father. Furthermore, the scum father and son team up to enjoy Riho's body to the fullest...