插画・漫画投稿&SNS网页 - ART street by MediBang

can someone explain
first and 3rd are the original from "little witch academia" and the second and fourth are from "Dexter gamer"
so I need an explanation cuz I loved this show and I am having mixed feelings like angry and confused at the same time, I don't know if they tried re-drawng it or if he traced but changed it a little

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