

_Mr. Tonegawa: Middle Management Blues_ is supposed to be a prequel to _Kaiji_
series that is set in the 90s. However, the anime features modern things, for
example: smartphones, vaping, apps like Yelp.

How come such things exist in the series?


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2018-11-06T22:23:12.593
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question
kaiji mr-tonegawa-middle-management-blues
If the Tonegawa anime is supposed to be a prequel to Kaiji that is set in the 90s, how come it features modern things?