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Shiori Usami (宇佐美 栞)Shiori Usami is an operator and a member of Border's Tamakoma Branch, originally a member of Kazama Unit. Shiori is a very playful and carefree person, as shown throughout her appearances in the manga. She also seems to be a nerd. Being an Operator, she is very smart. She's also overconfident and somewhat temperamental, as shown when Jin interrupted her when deciding Chika's position, which made her angry.