This started as a silly sketch from a while back based on one character from "Welcome to Demon School! Iruma-kun" who demonstrated the remarkable ability to become bishounen just by pulling back their hair. How could one pull of the same feat without hair though? By pulling back one ear of course! Totally how it works.
No! Of course the "bishie sparkles" aren't just made of foxfire. They're absolutely legit and the result of nothing but pure captivating good looks.