In the comics, Rosita meets her end in a rather unexpected and tragic way. It happens during a major battle or confrontation with a powerful enemy group.
Rosita died in the comics due to a combination of circumstances. There was a chaotic fight, and she made a heroic but ultimately fatal decision to protect others.
In the movie Love Letter, Hiroko wrote a letter to Fujii Kazuki because deep down in her heart, she had always thought that Fujii Kazuki was a man, until she received a love letter from Fujii Kazuki.
Although Hiroko did not know that Fujii Kiki was a female at the beginning, she felt a strong emotion after receiving the love letter and realized her feelings for Fujii Kiki. Therefore, she decided to write a letter to Fujii Kazuki to express her feelings and thoughts.
In the movie, Hiroko was a brave, strong and emotional character. She did not shrink back when faced with the challenge of love and self-awareness. Instead, she chose to face her feelings bravely and express her love to Fujii by writing a letter.