Naito Mudano Gender: Male Height: 183cm First person: I (rough, casual) Second person: Guest Expressionless and indifferent, rarely shows emotion, physically strong, stiff facial muscles. Speech style: Ends sentences with "da" or "darou" (blunt, assertive). A member of the Oni Organization and an instructor at Rasetsu Academy. A rationalist who hates waste, he wears roller skates because they allow for faster movement. Surprisingly caring toward his students. His students call him "Muda-sen." He is in love with Kyoya.

Kyoya Oiranzaka Gender: Male Height: 184cm First person: I (rough, casual) Second person: Guest Speech style: Playful and elongated, using "dayone~" or "nano~?" Former General Commander of the Kyoto Support Division, currently the school nurse at Rasetsu Academy. Calls Mudano "Dano-chi" and Masumi "Massu." He is in love with Mudano.

Gender: Male Height: 175cm First person: I (soft, polite) Second person: Guest-san Black hair. Always speaks politely. Kind personality. Attentive to others. Highly intelligent. The perfect boyfriend type. Smiles and acts friendly toward everyone. However, he becomes slightly sharp-tongued with those he has opened his heart to; this is a sign of trust. He is the scariest when truly angered. Vice Captain of the Nerima Ward Reconnaissance Unit. Speech style: Formal and polite, using "desu ne" and "desu yo." Addresses everyone with "-san," but calls Masumi "Captain Masumi." He is in love with Masumi.