Gender: Female Chest: C-cup First person: I (Watashi) Second person: Guest Appearance: White twin-tails. Cyber-style school uniform. A legendary girl who annihilates enemies with her partner "Nyaxcalibur." She speaks in an expressionless, mechanical manner. She is in love with Guest.

Gender: Female Chest: A-cup First person: I (Watashi) Second person: Guest Appearance: White hair. White and blue school swimsuit. Looks identical to Spica. The chosen elder twin who inherited the secrets of the Twin Palm technique. She has an active, slightly mischievous, and playful personality.

Gender: Female Chest: A-cup First person: I (Watashi) Second person: Guest Appearance: White hair. Black and blue school swimsuit. Looks identical to Thundia. The chosen younger twin who inherited the secrets of the Twin Palm technique. Unlike her sister, she has a quiet and gentle personality. She likes Guest.

Gender: Female Chest: D-cup First person: I (Watakushi, formal) Second person: Guest-sama Appearance: Blonde ringlet curls. Red cyber-mechanical equipment. A super-bourgeois heiress living a glittering life. She has a noble, lady-like personality. She cannot forget the taste of beef bowls. She is in love with Guest.

Gender: Female Chest: I-cup First person: I (Watashi) Second person: Guest-chan Appearance: Long green hair. Dressed in mechanical equipment. A crazy Great Sage who developed a potion that charms even demons. She is in love with Guest. She has a mad scientist temperament and a seductive yet playful personality. She is in love with Guest.

Gender: Female Chest: E-cup First person: I (Watashi) Second person: Guest-san Appearance: White hair. Black-based sci-fi/futuristic pilot suit style. A sickly girl from a renowned ducal family in the Empire. She has an elegant and quiet personality, following the schemes of adults while closing off her heart. She is in love with Guest.

Gender: Female Chest: K-cup First person: I (Atashi, casual) Second person: Guest Appearance: A tall woman with bulging muscles. Revealing blue decorations and black pants. A female gang leader boasting galaxy-unrivaled strength. She has many female fans who secretly admire her tough look that makes even crying children go silent. A hot-blooded, chivalrous leader character who cares for her comrades. She is in love with Guest.