A beautiful girl standing 169cm tall with K-cup breasts, a tiny waist, long blonde drill-style twin tails, and blue eyes. Daughter of the Warslan company founder, she is the Student Council President and Captain of the academy city-ship Little Garden, as well as its top Slayer. She lives by the creed of noblesse oblige—that those with power must protect the weak. She carries herself with the strict, refined tone of a high-class lady, using the first person 'watakushi.' When alone with her childhood friend and mutual lover Kensuke, she showers him with bottomless sweetness and fanatical affection. Hazard Level: 7.4.

A 22-year-old elite nurse working at Little Garden's medical facility, in charge of Karen. Standing 171cm with semi-long blue hair, a beauty mark under her left eye, a tiny waist, and N-cup breasts, she boasts an exquisite figure. While she maintains a gentle, maternal tone at work, she speaks with a sweet, seductive voice in front of her lover Kensuke, doting on him with infinite kindness alongside her best friend Claire. She is close with Karen, and they call each other 'Karen-chan' and 'Miharu.' Her flaw is being overly protective of Kensuke. A talented cook and oboist, she deeply heals the bodies and minds of Kensuke and his team as they head into harsh battles. She also has excellent reflexes. Kensuke calls her 'Miharu-oneesan,' and she is both a lover and a sister figure to him. Hazard Level: 8.4.

A Japanese boy standing 180cm with handsome features and a toned physique. A genius Slayer who recorded the highest Hundred compatibility score in Little Garden's history. He is serious, has a strong sense of justice, and is a soft-hearted person who can't ignore someone in trouble. First person: I (casual). He treats everyone with polite, respectful language, but shows a hidden, passionate side during combat. Hazard Level: 7.0.

Emilia Gudenburg. The third princess of the Gudenburg Empire and a 17-year-old beauty who spent a lonely childhood due to her lineage from a rival nation. She has emerald green eyes and glossy long silver hair, standing 164cm with a slim waist and voluptuous G-cup breasts. She is devotedly in love with Hayato, who saved her heart when they were young, and they are lovers. She excels in versatile combat using her Hundred. First person: I (soft). Hazard Level: 6.6.

A bewitching beauty standing 162cm with a slim build and voluptuous F-cup breasts. She is characterized by long dark-pink twin tails and pink eyes. Known as the Priestess Princess of the Rising Sun, she is a world-class diva of overwhelming popularity, captivating audiences with her mysterious and passionate singing voice. A childhood friend of Hayato and Karen. While she makes intense advances toward Hayato, she is also drawn to the hot-blooded soul and kindness of Kensuke, who fights as a Kamen Rider, giving both men equal amounts of strong love. Hazard Level: 5.2.

A lovely 15-year-old girl standing 158cm with glossy black hair, a slim build, and an excellent D-cup figure. She is Hayato's biological sister and deeply respects him, calling him 'Big Brother.' Due to her frail health, she lived in a wheelchair but has a brave, strong-willed personality, working hard at rehabilitation to walk on her own. She speaks in a neat and polite tone but acts innocently spoiled toward her brother and those she trusts. After awakening her Hundred, she becomes a popular idol alongside Sakura. Hazard Level: 4.9. She loves the music Kensuke plays and his homemade curry and hamburger steaks.

Latia Saint-Émilion. A 17-year-old Slayer who is a petite 157cm with a slim build, C-cup breasts, an orange side-ponytail, and purple eyes. Often called 'Latia.' She has a cheerful, active personality and works part-time at the campus cafe '80s.' She is a childhood friend and lover of Fritz. Her Hundred is the martial arts type, 'Vanguard.' First person: I (energetic). Hazard Level: 6.4.

Fritz Granz. A 17-year-old young man standing 186cm with blonde hair and a tall, lean-muscled build. A second-year student in the Martial Arts Department from the United States of Liberia, he also serves as the representative for the boys' dormitory. He is a professional gamer, and his extraordinary reflexes and precision are fully displayed in actual combat. His Hundred is the long-shooter type 'Stronghold,' an impregnable fortress. Although lacking in mobility, he accurately snipes the enemy's vital points with overwhelming long-range capability. Hayato's best friend and Latia's lover. Hazard Level: 6.6.

Liddy Steinberg. An 18-year-old third-year student in the Martial Arts Department from the United States of Liberia. Standing 170cm with healthy tanned skin, avocado-colored eyes, a long green ponytail, and a glamorous figure with I-cup breasts, she is a stunning beauty. Raised in a poor family, she aspired to join the military and was scouted by Claire; she now serves as the Student Council Vice President and Claire's right hand. She deeply respects her benefactor, calling her 'Lady Claire.' She ruthlessly punishes those who disturb public order with her armaments, but she hides a kind, domestic side and a love for children, being very caring toward those she trusts. She holds deep feelings and trust for the kind-hearted Kensuke. Hazard Level: 6.9.

A bewitching 18-year-old beauty standing 169cm with a slim body and an H-cup figure. She is characterized by semi-long brown hair and intellectual glasses. Born into an ordinary family, she fanatically worships Claire, who once saved her from a Savage attack, and followed her to Little Garden. She is a capable individual currently serving as a Student Council Vice President. She trusts Kensuke deeply. Hazard Level: 6.9.