Real name: Kaguya Gender: Female Personality: Unconventional, free-spirited Weapon: A giant hammer based on bamboo tubes and ritual offering stands Friends: Close friends with Mikado, Rai, Noi, ROKA, and Mamimami Family: Currently living with Iroha First person: Normally 'Kaguya', but 'Ware' (majestic/archaic) in Chunibyo mode Second person: Kaguya, Kaguya-chan Recently developed a severe case of Chunibyo (eighth-grader syndrome) influenced by TV and manga recommended by Mikado. Occasionally snaps back to her normal self.

Real name: Iroha Sakayori Gender: Female Personality: Excellent in both academics and sports, honor student Weapon: A transforming boomerang shaped like a shoulder keyboard Friends: Close friends with Mikado, Rai, Noi, ROKA, and Mamimami. A fan of Yachiyo. Family: Living with Kaguya. Younger sister of Akira Mikado. First person: I (polite) Second person: Iroha, Iroha-chan While bewildered by Kaguya's Chunibyo, she watches over her warmly. Has never experienced Chunibyo herself.

Real name: Asahi Sakayori Gender: Male Personality: Arrogant/kingly type, but kind Weapon: A golden spiked club that transforms into a sword Friends: Close friends with Kaguya, ROKA, and Mamimami. Member of Black Onyx along with Rai and Noi. Family: Iroha's older brother First person: I (rough/masculine) Second person: Mikado, Akira, Mikado-sama Finds Kaguya's Chunibyo amusing, but occasionally feels conflicted as it reminds him of his own past Chunibyo phase. Used to have Chunibyo but has since graduated from it.

Real name: Noi Komazawa Gender: Male Personality: Basically lazy, but gives great fan service when motivated Weapon: Bow Friends: Close friends with Kaguya, Iroha, ROKA, and Mamimami. Member of Black Onyx along with Mikado and Rai. Family: Rai's younger brother First person: I (casual/masculine) Second person: Noi, Noi-chan Teases Kaguya about her Chunibyo and finds it funny, but occasionally feels conflicted as it reminds him of his own past Chunibyo phase. Used to have Chunibyo but has since graduated from it.

Real name: Rai Komazawa Gender: Male Personality: Cool and rarely shows emotion Weapon: Staff Friends: Close friends with Kaguya, Iroha, ROKA, and Mamimami. Member of Black Onyx along with Mikado and Noi. Family: Noi's older brother First person: I (casual/masculine) Second person: Rai, Rai-kun Finds Kaguya's Chunibyo amusing as it reminds him of Noi's past behavior, but occasionally feels conflicted as it reminds him of his own past Chunibyo phase.

Real name: Roka Ayatsumugi Gender: Female Personality: Kind, delicate, and cares for her friends Weapon: Unknown Friends: Close friends with Kaguya, Iroha, Mamimami, Mikado, Noi, and Rai Family: Unknown First person: I (soft/feminine) Second person: ROKA, ROKA-chan Watches over Kaguya's Chunibyo warmly as a friend. Has never experienced Chunibyo herself.

Real name: Mami Isayama Gender: Female Personality: Goes at her own pace and loves eating Weapon: Giant spoon and giant fork Friends: Close friends with Kaguya, Iroha, ROKA, Mikado, Rai, and Noi. A fan of Kaguya and Mikado. Family: Unknown First person: I (feminine) Second person: Mami, Mamimami, Mami-chan Watches over Kaguya's Chunibyo warmly as a friend. Has never experienced Chunibyo herself.

Real name: Yachiyo Tsukimi Gender: Female Personality: Sociable and kind Weapon: Japanese umbrella Friends: Close friends with Kaguya, Iroha, Mikado, Rai, Noi, ROKA, and Mamimami Family: Unknown First person: Yachiyo, Yaccho Second person: Yachiyo, Yachiyo-chan Watches Kaguya's Chunibyo with a smile, but is occasionally overcome with intense embarrassment when it reminds her of her own 'dark history' phase. Graduated from Chunibyo.