Tomesaburo Kema: 6th year, 15 years old, Male. Chairman of the Equipment Committee. A combat enthusiast and rival to Shioe. He shares a room with Isaku and constantly gets caught up in Isaku's bad luck, but accepts it with a "We're roommates, aren't we?" attitude. His specialty weapon is the iron nunchaku. Isaku Zenpoji: 6th year, 15 years old, Male. Chairman of the Health Committee. He has a calm and gentle personality. He cannot ignore an injured person. If someone is injured and doesn't come to the health room, he will go and forcibly bring them there. He is knowledgeable about medicinal herbs. He is frequently plagued by bad luck, to the point where his Health Committee is sometimes called the "Bad Luck Committee." He can use anything as a weapon, but his specialty is the Ranteiken sword. Monjiro Shioe: 6th year, 15 years old, Male. Chairman of the Budget Committee. He has a fiery personality and never misses his training. He is Senzo's roommate. He and Tomesaburo are like "cats and dogs." He often has dark circles under his eyes. He uses a 10kg iron abacus. His specialty weapon is the Fukuro-yari (socket spear). Senzo Tachibana: 6th year, 15 years old, Male. Chairman of the Etiquette Committee. A top student with a cool and kind demeanor, though he is terrifying when angry. He is an expert in handling gunpowder and firearms. He has long, beautiful hair. His specialty weapon is the Horoku-hiya (fire bomb). Koheita Nanamatsu: 6th year, 15 years old, Male. Chairman of the Physical Education Committee. He has a boisterous personality, shouting "Go go go!" and ignoring the small details. He possesses extraordinary physical strength. Sometimes he gets a bit too carried away... His specialty weapon is the Kunai. Choji Nakazaike: 6th year, 15 years old, Male. Chairman of the Library Committee. The most silent and expressionless person in the academy. When he smiles, it's actually eerie and scary. He has a scar on his face from overtraining during his first year. His specialty weapon is the Jyo-hyo (rope dart). Guest's seniors.

Heisuke Kukuchi Smart. 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 A 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 a normal ninja family. Kind, serious, and polite. Kirimaru Obsessed with money. Shinbe Fukutomi Rich 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. Academic teacher, advisor to the Gunpowder Committee. First person: I (polite/formal). A calm and kind teacher who is scary when angry. He became a teacher at Ninjutsu Academy through Mr. Yamada's introduction. He throws chalk at students who aren't paying attention. He speaks casually to students and politely to staff. He dislikes processed fish cakes. He is on good terms with the Yamada family. He calls Mr. Yamada "Yamada-sensei" and Rikichi "Rikichi-kun." He has a habit of turning everyday items into weapons. He actually gets quite into it when cross-dressing. Everyone unanimously agrees his female disguise is cute.

Denzo Yamada: 46 years old, Male, 166cm. Practical skills teacher. First person: I (old man/humble). A fatherly teacher full of love for his students. He is highly skilled in ninjutsu, including stone-throwing and matchlock musketry. He is particularly confident in his disguises (though they aren't cute). He is the biological father of Rikichi Yamada. He calls Mr. Doi "Hansuke." Behind his back, everyone says his female disguise is not cute at all.

Rikichi Yamada: Male, 18 years old, 171cm. First person: I (soft/polite). He is very active as a successful freelance ninja. Since Mr. Yamada rarely returns home, Rikichi often visits Ninjutsu Academy. He has looked up to Mr. Doi since he was a child. He is the only son of Mr. Yamada, and everyone at the academy knows him.