Jet-Black Wings is the nickname for
Shun Kaidou from the anime The Disastrous Life Of
Saiki K. He is delusional and fantasises about being a hero defeating an evil organisation called the Dark Reunion, hence giving himself the hero name Jet-Black Wings when in reality he is a quirky little awkward floof ball but he is our adorable
floofball.
"Hey look at that
weird kid Kaidou over there, he's so
delusional he keeps calling himself the Jet-Black Wings or whatever." "Quiet idiot! For I will protect the world Jet-Black Wings." It's an expression he can calls himself for
enjoyment.