The animation of your younger sister is indeed a beautiful woman in the alternate choice part 4 with English subtitles.

In this captivating animated visual novel, you'll embark on a thrilling journey with your younger sister, now a stunning woman. This is the fourth installment of the series, bringing more tantalizing scenarios to the forefront. Each chapter is a new adventure, filled with passionate encounters and unexpected twists. The story begins with a steamy kiss, setting the stage for the steamy action ahead. Your sister, now a sultry housewife, is eager to explore her newfound desires. As the story unfolds, she finds herself in various enticing situations, each more provocative than the last. From seductive encounters with a handsome neighbor to intense gameplay that leads to an explosive creampie, every scene is a delight for the senses. This blend of anime and real-life scenes creates a unique experience, combining the best of both worlds. With English subtitles and a mix of cartoon and real-life elements, this is a must-see for fans of the genre.