HHKL-054 My brother doesn't know that his bride-to-be is actually my exclusive partner for internal ejaculation...

My brother's fiancée, whom he will soon marry. Actually, since two years ago when my brother brought her home, I've been secretly having sex with her and ejaculating inside without him finding out. The girl my brother brought home. She is incredibly beautiful and kind, exactly my type, and just seeing her with my brother makes me jealous as hell. I couldn't help but make a move on her when she was alone. Since then, we've been having sex behind his back... Even after my brother came to report his engagement, I had sex with her inside multiple times.※This work is recorded with one actress selected from the already released "HUNTA-800". It overlaps in content with already released works featuring multiple people, so please be aware if you have already purchased it.