Isa: So Izuku! Seven Deadly sins!

Izuku: *freezes* what?

Asuramaru: What is that.

Isa: I honestly don't know, but I heard it's an anime something contain biblical references and several immortals I don't remember what google said.

Kiseki-o: we should watch the anime soon 

Mahiru: So to answer your question, no we don't know who they are.