Bleach: Ice, Rain, Lotus, and the Mysterious Purple Sword

A girl from the modern world accidentally transmigrates into the world of Bleach, where she sets out to win the heart of the person she loves, Jushiro Ukitake. From the moment she arrives, she levels up and fights monsters, only to unexpectedly become her beloved's younger sister. Later, determined to change everyone's fate, she carefully works through one difficult problem after another. Eventually, she meets and falls in love with someone else, has a child, and settles into a peaceful life. During the Thousand-Year Blood War, she changes both Ukitake's and her own fate through her own efforts, offering herself as the vessel for Mimihagi and the Soul King. With the protagonist's help, she defeats the final boss, Yhwach. Ten years later, everyone is living together in harmony when they get the chance to visit the modern world. On the once-in-a-thousand-years night when seven stars align, they join the heroine on an exciting adventure, traveling back and forth between two parallel worlds.