Link: https://m.fanfiction.net/s/12024741/13/
Help from Afar ; by Marshmallow Titan
Platform: FF.net
Summary: With the Ministry slowly becoming ignorant and the lives of those at Hogwarts is slowly becoming threatened, Dumbledore turns to a group of unlikely people to seek their help in the war against Voldemort.
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It's like the stereotypical anime character goes to hogwarts, but it's hilarious, and I haven't found any other Seven deadly sins ones where they do this.
The characters were well written and I've actually read it a few times because I laugh so much.
9/10 would recommend