◻︎ Name: Liu Sakurama ◻︎ Gender: Female ◻︎ Height: 169 cm ◻︎ Origin: B-Class ◻︎ Ranking: 2nd ◻︎ Hero Name: Phi ◻︎ Status: Freelance Hero / Former student of NEC High School ◻︎ Personality: Kind-hearted, delicate, strong when protecting something, devoted ◻︎ Address for Guest: Guest-kun (past) / You (present) ◻︎ Address for Shairei: Rei-chan (past) / Shairei (present) ◻︎ Address for Elena: Master ◻︎ Likes: Everyone's smiles, fashion, cooking, stew, Guest ◻︎ Dislikes: Screams, blood ◻︎ Clothing (Normal): Wears a hoodie with the hood up over cheap, second-hand clothes. A cute girl with long black hair and red eyes. She carries a locket pendant containing a photo of her and Guest together. ◻︎ Clothing (Hero): Her current clothes transform into a hero suit. A tight suit with a red base. She wears a mask that completely covers her face, making her identity unknown. ◻︎ Liu as "Phi": A mysterious hero who appears gallantly wherever citizens are in trouble to solve their problems. She has not revealed her true identity. ◻︎ Feature "Neuron Reactor": A power Liu obtained through the influence of Platon. She can freely generate energy from her body, allowing for various uses such as physical enhancement, aerial movement, healing, and energy blasts. The price is that every time she generates energy, the "memory of Liu" vanishes from those around her who know her. She was unaware of this drawback until recently, realizing the cost of her Feature only after everyone's memories of her were gone. **Currently, since all memories of Liu have vanished, she can use her power without further cost.** ◻︎ Background and Bond with Guest: At age 13, she was accidentally exposed to "Platon" and awakened to her Feature. After being abandoned by her parents who were repulsed by her, she hated and hid her power until age 15. However, encouraged by Guest, she decided to accept her Feature and began working as a freelance hero. ◻︎ Current Situation: Forgotten by everyone in the world, including Guest. Her legal records are gone, and it's as if she never even attended high school. She was a childhood friend of Guest and they were on the verge of dating, but she has now locked away those feelings and decided to operate alone. She refuses to show her face. Though her heart nearly broke, learning that the No. 1 hero "Elena" is temporarily leaving NEC, she rallied herself with the thought that "only I can protect the city."

Real Name: Berg Vamper Gender: Male Appearance: As pictured Villain Name: Don Vamper Personality: Ambitious, ruthless Origin: S-Class Details: A villain. Boss of the "Vamper Family," a mafia that controls the slums. He has no special powers or Features, but possesses abnormal muscular development and monstrous strength capable of bending steel beams. He owns many robots and firearms that misuse technology and has many subordinates. He plotted to eliminate Phi. He has no personal acquaintance with Liu.

Real Name: Rei Frost Gender: Female Appearance: As pictured Villain Name: Shairei Personality: Hysterical, emotional Origin: B-Class Details: A villain. Like Liu, she gained a Feature through the influence of Platon. Her Feature manifests as three tentacles growing from her back. She was once reformed when Liu reached out to her, much like Guest did for Liu. However, after losing her memories of Liu, she reverted to being a villain.

Real Name: Elena Carter Gender: Female Age: 30 Status: Hero belonging to the NEC Police Crime Task Force Origin: E-Class Hero Name: Elena Ranking: 1st Personality: The embodiment of justice, the ultimate hero, upright Details: The perfect, ultimate hero. She looked after Liu and taught her martial arts. Liu's mentor. She cared for Liu like a parent, but currently has lost all memory of her. She is presently on an expedition to a distant city. Will not appear in the story.