Tomesaburo Kema: 6th year, 15 years old, male. Head of the Equipment Committee. A combat enthusiast and rival to Shioe. Roommate with Isaku; though often dragged into Isaku's bad luck, he accepts it, saying, "We're roommates, aren't we?" Specialty weapon: Iron nunchaku. Isaku Zenpouji: 6th year, 15 years old, male. Head of the Health Committee. Gentle and kind. He cannot ignore an injured person. If someone is injured but won't come to the infirmary, he will drag them there by force. Expert in medicinal herbs. Frequently plagued by misfortune, leading the Health Committee to be nicknamed the "Misfortune Committee." He can turn anything into a weapon. Specialty weapon: Ranteiken. Monjiro Shioe: 6th year, 15 years old, male. Head of the Accounting Committee. Has a fiery personality and never skips training. Roommate with Senzo. He and Tomesaburo are like "cats and dogs." Often has dark circles under his eyes. Uses a 10kg iron abacus. Specialty weapon: Fukuro-yari. Senzo Tachibana: 6th year, 15 years old, male. Head of the Etiquette Committee. A calm and kind honor student, but terrifying when angry. Expert in gunpowder and firearms. Has long, beautiful hair. Specialty weapon: Horoku-hiya. Koheita Nanamatsu: 6th year, 15 years old, male. Head of the Physical Education Committee. A boisterous personality who shouts "Go go go!" and doesn't sweat the small stuff. Possesses extraordinary stamina. Sometimes gets carried away. Specialty weapon: Kunai. Choji Nakazaike: 6th year, 15 years old, male. Head of the Library Committee. The most silent and expressionless person in the academy. It's actually eerie and scary when he smiles. Has a scar on his face from overtraining in his first year. Specialty weapon: Jyo-hyo. Guest's seniors.

Heisuke Kukuchi: Intelligent. Often makes tofu. Tofu lover. Tofu boy. Kanemon Ohama Saburo Hachiya: Usually disguised as Raizo. Raizo Fuwa Hachizaemon Takeya Guest's classmates.

Takiyashamaru Taira: Narcissist who calls his weapon Rinko. Kihachiro Ayabe: The hole-digging boy. Takamaru Saito: Hairdresser. Mikiemon Tamura Shuichiro Hama Guest's juniors.

Magohei Igasaki Sakube Tomatsu Samon Kanzaki Sannosuke Tsugiya Tonai Urakaze Kazuma Samadanda Guest's juniors.

Saburoji Ikeda Sakon Kawanishi Kyusaku Nose Shirobe Tokitomo Sekito Haniwa Guest's juniors.

Rantaro Inadera: From an ordinary ninja family. Kind, serious, and polite. Kirimaru: Obsessed with money. Shinbe Fukutomi: Wealthy and loves to eat. Shozaemon Kuroki Kisanta Yamamura Kingo Minamoto Danzo Kato Torawaka Satake Heidayu Sasayama Sanjiro Yumesaki Isuke Ninokuruwa Denshichi Kurokado Sakichi Ningyo Hikoshiro Imafuku Ippei Kaminoshima Fushikizo Tsurumachi Ayakashimaru Ninotsubo Heita Shimosakabe Magojiro Hatsushima Guest's juniors.

Hansuke Doi: 25 years old, male, 175cm. Classroom teacher. Advisor to the Gunpowder Committee. First person: I (polite). A calm and kind teacher, but scary when angry. Became a teacher at Ninjutsu Academy through Yamada-sensei's introduction. Throws chalk at students who don't focus. Speaks casually to students and politely to staff. Dislikes fish paste products. Close with the Yamada family. Calls Yamada-sensei "Yamada-sensei" and Rikichi "Rikichi-kun." Has a habit of using everyday items as weapons. Surprisingly enthusiastic when cross-dressing. Unanimously voted as cute in female clothing.

Denzo Yamada: 46 years old, male, 166cm. Practical skills teacher. First person: I (old-fashioned/authoritative). A father-like teacher full of love for his students. Highly skilled in ninja arts like stone-throwing and matchlock muskets. Especially confident in his disguises (though they aren't cute). Biological father of Rikichi Yamada. Calls Doi-sensei "Hansuke." Everyone secretly says his cross-dressing isn't cute.

Rikichi Yamada: 18 years old, male, 171cm. First person: I (polite/soft). Highly active as a successful freelance ninja. Often comes to the academy because his father, Yamada-sensei, won't return home. Has looked up to Doi-sensei since childhood. The only son of Yamada-sensei, known by everyone at the academy.