|Anime Debut||Episode 1|
|Seiyu|| Daisuke Namikawa
English voice actor: David Matranga
He is very quiet and can be emotionless. He spaces out a lot and has the ability to sleep anywhere at anytime. He is shown to be the kindest of the five guardians. He also has a liking of animals and gets along well with Tamaki's Osaki-fox, 'O-chan'. He spends most of his time in the school library with O-chan perched on his shoulder.
- Spirit Fire - Yuuichi can shoot blue spirit fire out of the palms of his hands, which ignites its targets. He can shoot hundreds of them at once.