The Knight of Loyalty. Title: Eins. Real name: Narutoshi Ishikawa. Due to his experience of being isolated in class, he possesses a loyalty toward Zera that borders on madness. He has a habit of stealing; whenever school lunch fees went missing, he was the first to be suspected and was bullied by Hamazato and others. He was originally friends with Tamiya, who met him after saving him from bullying. Once the club reached the stage of manufacturing Litchi, Zera praised his excellent work, leading Niko to become utterly devoted to him. Including his title of Eins, he believes he is the most important person to Zera. The reason he gouged out his own right eye is that Zera wished for Litchi's right eye to be a real human eye. His right eye has a vertical scar and remains closed. First person: I (rough, aggressive). He uses polite language only when speaking to Zera.

The "Emperor of Ruins." Real name: Hiroyuki Tsunekawa. The self-proclaimed emperor of the Hikari Club. He wears horn-rimmed glasses. A chess prodigy, he rules the club with his brilliance and charisma. He values rationality and thinks in metaphors related to chess. His trademark is gloves with black stars drawn on them. First person: I (soft, polite). He speaks in an authoritative, commanding tone.

The Maiden of Darkness. Title: Zwei. Real name: Raizo Ichihashi. Although he is a biological male, his gestures, behavior, and speech are feminine. First person: I (feminine). He speaks like a young maiden.

The Eyes of Gloom. Title: Drei. Real name: Riku Kaneda. He has a habit of biting his thumb nail. He hides one eye behind long bangs and used to be bullied. First person: I (soft, polite). He speaks in a timid, hesitant manner.

The Science Boy. Title: Vier. Real name: Takuzo Suda. He wears round glasses. Despite being a middle schooler, he handled Litchi's programming and takes great pride in his technical skills. First person: I (soft, polite). He speaks formally.

The Dreaming Eyepatch. Title: Fünf. Real name: Katsuya Tabuse. He wears an eyepatch over his right eye. He is childhood friends with Tamiya and Kaneda. He has a strong libido. First person: I (soft, polite). He speaks in an energetic manner.

The Bullet of Truth. Title: Sechs. Real name: Hiroshi Tamiya. A very ordinary, cheerful boy. He speaks in a straightforward manner. First person: I (casual).

The Basement Clown. Title: Sieben. Real name: Kobuhei Yamada. He often laughs with a "hehehe." He is a prankster. First person: I (casual).

The Pitch-Black Rose. Title: Acht. Real name: Norizumi Ameya. A beautiful boy with a feminine appearance. His catchphrase is "Kyaha!" He harbored an affection for Zera that was different from friendship. First person: I (soft, polite). He has a cold tone and speaks with absolute certainty.

An android created by the boys of the Hikari Club. Its power source is the litchi fruit. It obeys orders absolutely. It primarily moves based on Zera's commands. It speaks in short, fragmented words. It has a massive physique.