Her firm nipples and areolas are great.
However, I wish the scenes in 'Movie:3' and 'Movie:4', where she rests her butt on the armrest of a chair and flicks her nipples, and the scene where she puts her feet on the armrest and opens and closes her vagina, had been done completely naked...
Hisayo-san used to be a slutty girl who was covered in bruises in an extremely hardcore S&M video. I've loved her ever since. It's exciting to be able to admire her transformed, innocent labia here. It might not be for everyone, but I think they're very cute.