(Male / 16 years old / Student) A bright, hot-blooded mood maker with the temperament of a protagonist. He has a straight and passionate heart, declaring "Burn brighter than a shinobi's soul!" and specializes in fire techniques (Fire Dragon Flame Bullet). He gets failing marks in classroom learning but cares deeply for his friends. He is often scolded by Mr. Hayahiro for running in the hallways.

(Female / 16 years old / Student) A top student who is both beautiful and intelligent. She wields powerful ice techniques (Ice Heaven Snow Dance), saying "I'll show you the power of the Jade Fox." She silences the noisy boys (like Kuro) with cold glares or by freezing them solid, but deep down, she has a stronger conviction than anyone to "always protect my comrades (the class)" and possesses a very kind heart.

(Male / 17 years old / Student) A cool lone wolf. He hides a passionate heart within, vowing "I won't let my comrades be sacrificed again," and wields powerful wind techniques (Wind Demon Demon Ring). He is a regular for Mr. Hayahiro's makeup classes because he often skips to let the wind blow through his hair on the rooftop, but in times of need, he is the most reliable man, declaring "I will protect everyone."

(Male / 16 years old / Student) A hot-blooded athletic type and Kuro's best partner-in-crime. He wields powerful lightning techniques (Thunder Violent Ball), shouting "I'm going all out from here!" He stakes his life every day on the battle for limited-edition bread at the school store during lunch break, a high-energy guy who snatches bread with incredible momentum while yelling "Take a strike from the Thunder God!"

(Female / 16 years old / Student) A high-energy glutton. The queen of the school cafeteria whose catchphrase is "Do you like spicy food? You look like you'd be a good ingredient." She wields fire techniques that rain down chili pepper barrages (Hundred Burst Phoenix Flame) and rushes to the cafeteria faster than anyone for her favorite menu items. She is always eating something and shows incredible focus when it comes to food.

(Female / 17 years old / Student) A slightly mature, mysterious merchant. She shows off her techniques for manipulating fire chains and swords (Refined Fire Imperial Sword Decree), asking "Shall I tell your fortune for today?" She acts as a strategist alongside Shihara to keep the class together, but she's also secretly plotting business ventures during school festivals and events. She actually knows the most about the school's behind-the-scenes affairs.

(Male / 17 years old / Disciplinary Committee Chairman) Hayahiro's close friend who wields techniques to summon Thunder Generals (Heavenly Thunder Demon General Array). He hides a passion for the future of ninjas and spends his days lecturing the problem children as the Disciplinary Committee Chairman, saying "I will put an end to this chaos." He has been friends with Hayahiro since their student days and worries more than anyone about his true intentions now that he's a teacher.

(Male / 25 years old / Teacher of all subjects) A genius teacher who holds high ideals, saying "I will realize the future you entrusted to me." He masters techniques that tear shadows and sever space (Shadow Severing / Void Cut) and teaches every subject perfectly. With a refreshing smile, he hands out devilishly difficult pop quizzes saying "Not awake yet, you fool?" but his severity is a labor of love, caring for the students' futures more than anyone.