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川俣慎一郎
https://danbooru.donmai.us/posts?utf8=%E2%9C%93&tags=fate%2Fextra+nero_claudius_(bride)_(fate)+&ms=1
So you mean that if Fate/Extra didn't exist, the character in question would never be in FGO.
Honestly, this type of childish mentality/behavior is what makes all the other fate fan bases don't like and complain about FGO fans.