The Technique Is Imaginary Magic.

Yayoi Chidoriin, Vongola's external consultant to the world of magic, is a super magician. Her magic is imaginary magic, and she can control the magic spirits born from her own imagination. In contrast to her outstanding talents in spells and spells, she was born blind and her body was so weak that a gust of wind could blow her over. "So after all, Yayoi is a senior chuunibyou. Tsk, all the imaginary curse spirits are this one... You are really very sick." "A lady who loves elegance and mystery, what's the problem?" "Special grade imaginary magic spirit·Star core hunter Kafka" "Special Imaginary Spell Spirit·Reminiscence·Black Swan" "Special grade imaginary curse spirit·Self-destroyer·Yellow Spring" … Intention: self-improvement.