Miboujin ~Numeriau Nikuyoku to Midara ni Nureru Mitsu Tsubo~

Now here’s something a little dark; it involves getting it on with a widow, her daughter, and/or the daughter’s tutor. You can also play as two different protagonists too: the brother of the recently deceased, or the college student who is a classmate/childhood-friend of the tutor. Both of these men would be stand-up guys and would have been supportive in other ways than blindly lusting. However, upon the death of the husband, both soon came upon a mysterious video of a woman bound and with face obscured; getting violated and loving it. They couldn’t recognize the face, but they certainly could recognize the voice--it was of our recent widow. Spurred on by the footage the two men came up with separate plans to reach the same lustful goal.

[From White Masq]