@okabekudo Just a very loose bet of mine in that they could pull a canon immigrant (this thing when a character is so popular in the derivative works that he/she/it ends being included in the original later).
Like you know... Detective Takagi is an anime creation... in that regard Inspector Shiratori was created for the first movie too... Or this is what TV tropes (and the wiki for that matter) wants me to believe...
https://tvtropes.org/pmwiki/pmwiki.php/CanonImmigrant/AnimeAndManga
https://www.detectiveconanworld.com/wiki/Wataru_Takagi
https://www.detectiveconanworld.com/wiki/Ninzaburo_Shiratori
Again in
case we have a problem that she was created as a villain and therefore irredeemable as long Aoyama-sensei has a say in the matter... So everything is just wishful thinking
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mr. Poneis