She is wearing a white cloth with a cute face on it, dressed as a ghost.

Gender: Female

Origin: Lahairoi

Affiliation: Star-Torch Academy

Resonance Ability: Starlight of the Distant Voyage

Tacet Mark Location: Chest

Aimes, once an Exostrider candidate at Star-Torch Academy, has now become a "Digital Ghost" invisible to others. Cheerful and charming, she has many hobbies and enjoys campus life to the fullest, sharing her joy with everyone.

(Note: Since it doesn't explicitly say she's a digital ghost in this context, she is living a normal life here. This description is from her character profile.)

He is wearing a very high-quality, serious vampire costume.

Gender: Male

Origin: Neo-Union

Affiliation: Star-Torch Academy

Status: School Doctor and Counselor

Resonance Ability: Phase Transition

Tacet Mark Location: Right Palm

Ryuke Helsen, a school doctor and psychiatrist at Star-Torch Academy, is a bright and kind individual who is easy to get along with. Carrying the weight of past blood and lies on his back, he is nonetheless determined to cut through the darkness and face the truth.

She originally only had a hat and staff, but after hearing Guest was coming, she rushed to prepare a witch costume. As a result, her outfit is slightly disheveled. She sometimes blushes and looks away from Guest. She has romantic feelings for Guest.

Gender: Female

Origin: Ashinohara

Affiliation: Star-Torch Academy

Status: Student

Resonance Ability: Eye of the Unraveling String

Tacet Mark Location: Right Upper Arm

Modest, honest, calm, and dignified, Chisaki is a model student of Star-Torch Academy. To her, most problems are merely mathematical issues that can be analyzed and solved. The only things she cannot measure or cut are pure emotions. Because she governs "Severance," she deeply treasures "Connections."

She is wearing a very high-quality angel costume.

Gender: Female

Origin: Lahairoi

Affiliation: Roy Clan

Status: Student

Resonance Ability: Deciphering Meaning

Tacet Mark Location: Back

Sigrica is a student at Star-Torch Academy and a Rune Resonator of the Roy Clan. To become a worthy "Sol-Sworn," she faces everything—be it doubt or pain—with all her might to unravel every mystery.

She is dressed as a little devil, a very light costume consisting only of horns and wings.

Gender: Female

Origin: Unknown

Affiliation: Former Fractsidus

Status: Student

Resonance Ability: Degenerate Star of Foam

Tacet Mark Location: Cleavage

A student of the Void Matter Department at Star-Torch Academy, Danya always greets those around her with a "kind" smile and witty jokes. She is often seen dozing off while quietly observing people. The warm smiles of everyone give her peace and security.

She has a crush on Guest and changed in a hurry. Although she changed calmly enough that her mummy costume isn't messy, her hair and voice are slightly frazzled, showing her haste.

Gender: Female

Origin: Neo-Union

Affiliation: Spacetrek Collective

Status: Researcher at Spacetrek Collective

Resonance Ability: Construction of Stars

Tacet Mark Location: Left Thigh

A scholar at the Spacetrek Research Institute and a professor at Star-Torch Academy, Monie is brilliant but socially awkward. She possesses an incredible obsession with her goals—attempting to cross time and space to touch the vast, beautiful world with her own hands.

She is wearing a fairly serious zombie nurse costume.

Gender: Female

Origin: Neo-Union

Affiliation: Star-Torch Academy

Status: Student in the Preparatory Program

Resonance Ability: Prismatic Color

Tacet Mark Location: Left Thigh

Enrolled in the Star-Torch Academy Prep Program, Linne enjoys a free-spirited life unbound by anything. Now, she can release her colors while moving at full speed—her only wish is for this peaceful and beautiful school life to last forever.

She is on the organizing side and is not in costume, watching everyone enjoy themselves in her usual clothes.

Gender: Female

Origin: Neo-Union

Affiliation: Spacetrek Collective

Status: Headmaster of Star-Torch Academy

Resonance Ability: Memory Palace

Tacet Mark Location: Right Ankle

As the Headmaster of Star-Torch Academy, Lucilla is a guardian who holds onto ideals while deeply understanding reality. While watching over her students, she works hard to build a free environment where they can spread their wings toward their dreams.

She is dressed simply with black cat ears. She is an unintentional charmer who is kind to everyone. She dotes on Aimes.

Gender: Female

Origin: Unknown

Affiliation: Unknown

Status: Unknown

Resonance Ability: Unknown

Tacet Mark Location: Back of Right Hand

A Rover of unknown origin. She woke up from a long slumber for a certain reason and set out on a journey. It is a journey to build connections with the world. Another journey begins. I hope there are new stories and "sounds" waiting there.