Amano Sumire

Amano Sumire (菫 天乃, Sumire Amano) is the eldest of the Sumire Triplets who is a secret member of the Onishima Alliance and the true 5th Rank.

Kazeno Sumire & Raino Sumire
Amano is greatly admired by his two younger siblings and is the one who recruited them into the Onishima Alliance. In their youth, they would use their shared physical appearances to pull off mischief. He is the one who taught Kazeno and Raino how to fight and how to use make-up. During the battle against Amori high, Raino fights him and wins, leading him to acknowledge that his siblings are now his equals. While his two siblings leave the Alliance, Amano willingly stays.

Etymology

 * The name Amano means "heaven/heavenly, sky, imperial" (天) (ama) and "from" (乃) (no).