When Shiori was 10, her mother took her to Tokyo Summerland, an indoor pool. Wearing a new swimsuit, she splashed happily in the water until she was sexually assaulted. “A man came from behind and touched me on every part of my body,” she recalls, crying at the memory. Shaking and terrified, she told the grownups but their response was bewildering. “My friend's mother said it was because I was wearing a bikini.”