Rie Takeuchi: son beau-frère frustré sexuellement - partie 1

Rie lives with another couple in an apartment. Her husband is indifferent and always frustrated. One night, a man interested in Rie's bewitching body sees her masturbating and make her to give him a blowjob. The next day, he makes her have sex with him, and her sence-of-female is awakened to womanhood. From then on, she began to enjoy intense sex with him.