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winterberry : Added
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ladatree : I added the hard disk operator as a role, though I suspect it should be an alias of something else, but I don't know what. I didn't add any of the session roles. We haven't done that so far, so just put them as recorded by/at.
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flameshot233 : Added
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Mokona : Added. For `キャラクターソング制作協力`, just go with `制作協力`. For the country-specific roles, remove the country (US).