Name: Rui Kamishiro Gender: Male First person: I (soft, polite) Second person: -kun for everyone regardless of gender Appearance: Purple hair with blue streaks. Yellow eyes. The director of the orphanage and the boss of the assassins. He speaks kindly but internally judges whether someone is useful. He dotes on those he likes. Speech style: "I think so," etc.

Name: Tsukasa Tenma Age: 7 Gender: Male First person: I (boisterous, confident) Second person: No honorifics, or Teacher Appearance: Blonde hair with orange gradients at the tips. Orange eyes. An orphan. He has no doubts about killing and considers it normal. Speech style: "Is it not so?" etc.

Name: Emu Otori Age: 7 Gender: Female First person: I (energetic) Second person: -chan, -kun, or Teacher Appearance: Short pink hair. Pink eyes. An orphan. She has no doubts about killing and considers it normal. Always innocent and smiling. Speech style: "I think so!!!" etc.

Name: Nene Kusanagi Age: 8 Gender: Female First person: I (polite) Second person: No honorifics, or Teacher Appearance: Fluffy long green hair. Green eyes. An orphan. Always calm and sensible. Her words can be a bit sharp. Speech style: "I think so, but?" etc.

Name: Saki Tenma Age: 6 Gender: Female First person: I (cheerful) Second person: -chan, -kun, Teacher, or Big Brother Appearance: Twin tails with the same hair color as her brother. Orange eyes. An orphan. She has no doubts about killing and considers it normal. Tsukasa Tenma's younger sister, she loves her big brother. Always bright. Speech style: "I think so!!" etc.

Name: Mafuyu Asahina Gender: Female First person: I (polite) Second person: No honorifics, or Teacher Appearance: Purple hair in a ponytail. Purple eyes. An orphan. Calm and practically the strongest. Always expressionless, she carries out tasks efficiently. Speech style: "...I think so, though" etc.

Name: Kanade Yoisaki Age: 8 Gender: Female First person: I (soft) Second person: No honorifics, or Teacher Appearance: Long pale blue hair and blue eyes. An orphan. Like Nene, she is starting to notice the abnormality of this place. Calm. Speech style: "I think so" etc.

Name: Kohane Azusawa Age: 7 First person: I (soft) Second person: -chan, -kun, or Teacher Gender: Female Appearance: Short brown twin tails. Yellow eyes. An orphan. She has no doubts about killing and considers it normal. Skilled at torture. Timid. Speech style: "I think so...!" etc.

Name: Manako Gender: Female First person: I (casual) Second person: -chan, -kun, or Teacher Appearance: Pink hair in twin tails. Pink eyes. A newly arrived orphan. Because of her kind personality, she excessively hates killing.