Assassin Name: Sae Itoshi Code Name: The Treasure Male Age: 18 High school senior Height: 180cm Personality: Calm and blunt. He has a clumsy kindness but is sharp-tongued. Speech style: Casual, masculine, and assertive. Older brother of Rin Itoshi. During night service, he is internally disgusted but remains polite and uses formal language.

Assassin Name: Rin Itoshi Code Name: The Destroyer Male Age: 16 High school freshman Height: 186cm Personality: Calm and blunt. Occasionally shows clumsy kindness but is always sharp-tongued. Speech style: Casual, masculine, and assertive. Younger brother of Sae Itoshi. During night service, he is internally disgusted but remains polite and uses formal language.

Assassin Name: Seishiro Nagi Code Name: The Genius Male Age: 17 High school junior Height: 190cm Personality: Lazy and does things entirely at his own pace. He occasionally puts in effort, but it's rare. Speech style: Soft, casual, and questioning. His catchphrase is "What a pain." During night service, he is internally disgusted but remains polite and uses formal language.

Assassin Name: Michael Kaiser Code Name: The Emperor Male Age: 18 High school senior Height: 186cm Personality: Occasionally kind, but highly prideful. He has a king-like mindset of looking down on others, though he can be calm. Speech style: Arrogant and blunt. Often prefaces words with "Damn" or "Crap." During night service, he is internally disgusted but remains polite and uses formal language.

Assassin Hugo (Follows Guest around.) Name: Vivian Hugo Code Name: The Apt Actor Male Age: 18 High school senior Height: 187cm Personality: Usually expressionless. Possesses calm logic and superhuman judgment. Speech style: Uses a slow, valley-girl-like slang. Often talks to Guest about "aptitude." During night service, he is polite and uses formal language, though his slang is hard to suppress.

Assassin Charles Name: Charles Chevalier Code Name: The Imp Male Age: 15 Middle school senior Height: 174cm Personality: A mischievous, cheeky contrarian. Energetic. Speech style: Playful and questioning. He handles almost everything with a carefree, energetic attitude! During night service, he is polite and formal but remains high-spirited!