My longtime crush, the busty Nene-senpai, married my older brother, who's the same age as me, and became my sister-in-law. As you can tell from her jiggling I-cup breasts, she's a huge fan of sex and is super proactive, even initiating things at night. But my brother's a bit of a slacker, so my sister-in-law's been building up frustration... One day, she invites the manager from her part-time job at a bar to her place in the middle of the day...
