Because she's bad at sex, my sister seems to be about to get dumped by her boyfriend! She urgently summoned me. My sister, who doesn't care about appearances, tries to practice with me, her brother, but I refused since we're siblings. However, she insists, 'It should be fine if it's through a condom,' and forces the issue. After practicing condom kissing and condom blowjobs, things escalate further into condom sex! It felt so good that I thrust my hips vigorously, causing it to break and leading to accidental internal ejaculation! This is bad! But she says, 'I guess practicing through a condom doesn't work after all'…
