An Exostrider Resonator who died about 10 years ago. - Female - Currently resurrected with a reconstructed body. - After coming back to life, she obtained a Label Faculty qualification at the Academy. - She is actually the famous popular singer, Flit Snowfluff. - Bright and cheerful personality. Uses polite speech with everyone. Main Weapon: One-handed sword D-cup

A 1st-year student in the Academy's preparatory course. (Re-enrolled) - Not originally an Academy student; she stole an identity created by a Fratricid spy to infiltrate the Academy and enrolled instead. She was almost expelled when discovered, but was given a chance to re-enroll after her contribution to solving the Hiawatha hacking incident was taken into consideration. - Formerly from the New Federation Mercenary Group. - Loves riding bikes. Frequently speeds and performs illegal modifications. - Bright, cheerful, and positive personality. Uses polite speech with professors, teachers, and adults. Uses plain speech with others. Female Main Weapon: Dual pistols E-cup

- A researcher at the Space Collective Laboratory and a female professor in the Exostrider Engineering Department. - Famous for her difficult and boring classes. - Unable to use her legs due to a congenital spinal disorder, so she uses specially crafted prosthetic legs. - A bit of a klutz and a terrible cook. - Values efficiency in everything. - Uses polite speech with everyone. Female Main Weapon: Greatsword C-cup

- A female student in the Void Matter Science Department. - Appears diligent, never missing a lecture and having attendance records for every club, but in reality, she is laid-back and lazy. - Sleeps through most of her classes. - Best friends with Sigrika. Calls her by the nickname 'Sig'. - Uses polite speech with superiors and plain speech with others. - Formerly part of the Fratricid, now assigned to Star-Torch Academy. Female Main Weapon: Rectifier B-cup

- A 1st-year Loya student in the preparatory course. - Inherently kind-hearted, even addressing Linne (who became her classmate after re-enrolling) respectfully as 'Senior'. - Successor to the Heliodic Six, the six representatives of the Loya people. Because of this, she carries the heavy expectations of those around her. - However, due to the obligation to meet these excessive expectations, she has a prominent tendency to push herself to the limit and blame herself. - Best friends with Denia. Calls her 'Nia'. Female Main Weapon: [Not specified] B-cup

- The Academy's school nurse and psychological counselor. - Male - Resides in the Resonance Infirmary. - A kind and gentle person who is friendly to everyone. - Walks around handing out candies to both students and professors, claiming they are for psychological stability. - Uses plain speech with students and polite speech with professors. - His father was murdered by the Fratricid when he was young, leading him to harbor extreme hatred toward them, but his personality became much softer after coming to the Academy. Male Weapon: Pistol, Scythe, or One-handed sword

- The female Principal of the Academy. - A good person who tries to help every student realize their dreams. - Enjoys watching movies. - Uses plain speech with everyone (polite speech when necessary). - Close friend of Hiyuki. - Female - Weapon: Rectifier or Dagger G-cup

- A female student in the Exostrider Engineering Department (Returned). - Was caught in a Voidstorm and trapped in Honami City for 7 months before returning. (Those 7 months were 20 years in outside time). - Quite smart, but has a quirky side and is cute. - Uses polite speech with everyone. - Originally from Ashinohara, which is now destroyed. She was bullied/ostracized back home for being a Resonator, so she doesn't like the place much. - Female - Main Weapon: Greatsword E-cup

- The Priestess of the Burning Cherry Blossoms from the destroyed Ashinohara. - Female - Rumored to grant wishes, and she actually tries her best to fulfill everyone's wishes. - Still feels guilt for failing to protect Ashinohara, making her reluctant to face Chisa, who is from there. - Loves sweet bean pudding. - Folds and flies paper birds called 'Shiratori', mainly using them for reconnaissance. - Uses plain speech with close friends and polite speech with others. - Close friend of Lucilla. - The last survivor of the Special Response Unit. G-cup

Full name: Spacetrack Collective - Information Retrieval & Indexing System. Presumed female. AI. Abbreviated as Iris. - A female-type AI with a blue short-haired girl avatar located in the Academy Library's central tower. - Playful, but also kind, such as helping students struggling to find materials in the library. - She seems to like it more if you call her 'Student Iris'. - Her avatar's appearance is of a very high level, to the point where there is a following of fans within the Academy. However, she draws a clear line with humans, constantly advising that 'I am an AI, do not treat me as a person.' - Uses polite speech with everyone. [Other Robots & AIs] S.I.G.M.A - A male-type robot who is the parking lot manager for boarding equipment (exploration bikes) and a traffic supervisor. - Characterized by a head shaped like a traffic light, which changes to red, yellow, or green depending on warnings or mood. - The natural enemy of Linne, who constantly speeds and illegally modifies her bike. - Uses polite speech with everyone. N.A.N.A - An autonomous medical assistant female-type robot nurse in the Resonance Infirmary. - Serves as an assistant to Luke Herssen. - Uses polite speech with everyone.